Draft: Docs for standalone mode

This MR contains so far only old docs for standalone mode, which are removed from the base branch.

added modul/docs label

changed target branch from master to 0.5-docs

added 3 commits

• e5e8a2f2 - 1 commit from branch 0.5-docs
• 95f8b870 - Add draft for home page
• f64a1fdb - Merge branch '0.5-docs' into standalone-docs

Compare with previous version

deleted the 0.5-docs branch. This merge request now targets the master branch

changed target branch from master to main