feat(operator_doc): show supported files in operator documentation Markdown sources

[PProfizi]

Adds the Supported file types section for the documentation of the source operators, the same way as in the static html doc.

Result is:

• Add explanation of the section

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.39%. Comparing base (613e220) to head (1bfde80).
⚠️ Report is 17 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2702      +/-   ##
==========================================
- Coverage   84.42%   84.39%   -0.03%     
==========================================
  Files          92       92              
  Lines       10890    10921      +31     
==========================================
+ Hits         9194     9217      +23     
- Misses       1696     1704       +8     

[PProfizi]

@PProfizi add description of what supported file types are

[github-actions]

Some tests with 'continue-on-error: true' have failed:

• PyDPF-Post API tests on ubuntu-latest

Created by continue-on-error-comment