Restructured and expanded documentation

Manifest.toml

Project.toml

docs/build/adapting.html

docs/build/architecture.html

docs/build/assets/documenter.js

docs/build/assets/logo.png

docs/build/assets/persefonejl_logo_v3_splash.png

docs/build/assets/screenshot.png

docs/build/assets/search.js

docs/build/assets/themes/documenter-dark.css

docs/build/assets/themes/documenter-light.css

docs/build/assets/themeswap.js

docs/build/assets/warner.js

docs/build/config.html

docs/build/crops.html

docs/build/developing.html

docs/build/energy.html

docs/build/farm.html

docs/build/gis.html

docs/build/gui.html