[DOC] update readme

[Remi-Gau]

quick clean up of the README

left some things commented as I do not know if they apply (for example: passing a config to the bids validator)

rendered version: https://github.com/Remi-Gau/python-validator/blob/readme/README.md

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.90%. Comparing base (9acd81f) to head (a0c40bd).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #7   +/-   ##
=======================================
  Coverage   85.90%   85.90%           
=======================================
  Files           3        3           
  Lines         149      149           
  Branches       43       43           
=======================================
  Hits          128      128           
  Misses          9        9           
  Partials       12       12           

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[Remi-Gau]

more possible changes:

• remove contributors as they correspond to those in the javascript validator
• remove zenodo.json for the same reason

[Remi-Gau]

is this failing because I opened the PR from a fork?

https://github.com/bids-standard/python-validator/actions/runs/10384933325/job/28752987383?pr=7

[effigies]

Seems plausible. I can try disabling that on forks.

[effigies]

Initial comments

[Remi-Gau]

will merge and we can revert or iterate on this