Added github actions for autobuild and manualbuild

.github/workflows/cmake_autobuild_ocv3416.yml

+name: CMake auto build on OpenCV 3.4.16
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  container:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    container: andrewssobral/opencv3:3.4.16
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile C++ library
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      # run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cd build && cmake .. && make -j $(nproc)
+
+    - name: Build and install the python wrapper
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: git config --global --add safe.directory /__w/bgslibrary/bgslibrary && git submodule update --init --recursive && python setup.py build && python setup.py install
+
+    - name: Compile the C++ QT User Interface
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd gui/qt/build && cmake .. && make -j $(nproc)
+
+    - name: Compile examples
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd examples/build && cmake .. && make -j $(nproc)

.github/workflows/cmake_autobuild_ocv460.yml

+name: CMake auto build on OpenCV 4.6.0
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  container:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    container: andrewssobral/opencv4:4.6.0
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile C++ library
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      # run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cd build && cmake .. && make -j $(nproc)
+
+    - name: Build and install the python wrapper
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: git config --global --add safe.directory /__w/bgslibrary/bgslibrary && git submodule update --init --recursive && python setup.py build && python setup.py install
+
+    - name: Compile the C++ QT User Interface
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd gui/qt/build && cmake .. && make -j $(nproc)
+
+    - name: Compile examples
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd examples/build && cmake .. && make -j $(nproc)

.github/workflows/cmake_manualbuild_ocv3416.yml

+name: CMake auto build on OpenCV 3.4.16
+
+on: workflow_call
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  container:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    container: andrewssobral/opencv3:3.4.16
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile C++ library
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      # run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cd build && cmake .. && make -j $(nproc)
+
+    - name: Build and install the python wrapper
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: git config --global --add safe.directory /__w/bgslibrary/bgslibrary && git submodule update --init --recursive && python setup.py build && python setup.py install
+
+    - name: Compile the C++ QT User Interface
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd gui/qt/build && cmake .. && make -j $(nproc)
+
+    - name: Compile examples
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd examples/build && cmake .. && make -j $(nproc)

.github/workflows/cmake_manualbuild_ocv347.yml

+name: CMake auto build on OpenCV 3.4.7
+
+on: workflow_call
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  container:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    container: andrewssobral/opencv3:3.4.7
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile C++ library
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      # run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cd build && cmake .. && make -j $(nproc)
+
+    - name: Build and install the python wrapper
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: git config --global --add safe.directory /__w/bgslibrary/bgslibrary && git submodule update --init --recursive && python setup.py build && python setup.py install
+
+    - name: Compile the C++ QT User Interface
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd gui/qt/build && cmake .. && make -j $(nproc)
+
+    - name: Compile examples
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd examples/build && cmake .. && make -j $(nproc)

.github/workflows/cmake_manualbuild_ocv460.yml

+name: CMake auto build on OpenCV 4.6.0
+
+on: workflow_call
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  container:
+    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
+    # You can convert this to a matrix build if you need cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+    container: andrewssobral/opencv4:4.6.0
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile C++ library
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      # run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cd build && cmake .. && make -j $(nproc)
+
+    - name: Build and install the python wrapper
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: git config --global --add safe.directory /__w/bgslibrary/bgslibrary && git submodule update --init --recursive && python setup.py build && python setup.py install
+
+    - name: Compile the C++ QT User Interface
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd gui/qt/build && cmake .. && make -j $(nproc)
+
+    - name: Compile examples
+      # Build your program with the given configuration
+      # run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cd examples/build && cmake .. && make -j $(nproc)