Add Python formatter Ruff and run on commit

[nellh]

This automatically formats the worker's Python code with the Ruff formatter and runs on commits.

[codecov]

Codecov Report

Attention: Patch coverage is 59.33333% with 61 lines in your changes missing coverage. Please review.

Project coverage is 48.32%. Comparing base (9d4c7a0) to head (aee8464).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
services/datalad/datalad_service/common/git.py	46.15%	7 Missing ⚠️
services/datalad/datalad_service/handlers/files.py	44.44%	5 Missing ⚠️
services/datalad/datalad_service/tasks/files.py	50.00%	5 Missing ⚠️
services/datalad/datalad_service/common/github.py	0.00%	4 Missing ⚠️
...rvices/datalad/datalad_service/handlers/objects.py	0.00%	3 Missing ⚠️
...es/datalad/datalad_service/handlers/upload_file.py	25.00%	3 Missing ⚠️
...ervices/datalad/datalad_service/middleware/auth.py	25.00%	3 Missing ⚠️
...ces/datalad/datalad_service/tasks/remote_import.py	25.00%	3 Missing ⚠️
...ervices/datalad/datalad_service/tasks/validator.py	40.00%	3 Missing ⚠️
services/datalad/datalad_service/app.py	83.33%	2 Missing ⚠️
... and 16 more

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3518   +/-   ##
=======================================
  Coverage   48.32%   48.32%           
=======================================
  Files         591      591           
  Lines       42079    42080    +1     
  Branches     1377     1377           
=======================================
+ Hits        20335    20336    +1     
  Misses      21575    21575           
  Partials      169      169           

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