Readd CLI docs

[maurerle]

readds the cli arg docs

also updates pyyaml-include to be compatible with latest version

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.59%. Comparing base (ccfe528) to head (52c23cf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #400   +/-   ##
=======================================
  Coverage   77.59%   77.59%           
=======================================
  Files          47       47           
  Lines        5797     5797           
=======================================
  Hits         4498     4498           
  Misses       1299     1299           

Flag	Coverage Δ
pytest	77.59% <ø> (ø)

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[maurerle]

Looks fine:
https://assume--400.org.readthedocs.build/en/400/command_line_interface.html

I also adapted the docs building instructions to do the same as readthedocs so that the relative paths as compatible, as long as this is not fixed in sphinx-argparse - see sphinx-doc/sphinx-argparse#61