refactor: rename OpenAI bot factories

[mtth]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.90%. Comparing base (ba8a0de) to head (005d8af).

Files with missing lines	Patch %	Lines
src/git_draft/bots/__init__.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #104   +/-   ##
=======================================
  Coverage   84.90%   84.90%           
=======================================
  Files          16       16           
  Lines        1073     1073           
  Branches       86       86           
=======================================
  Hits          911      911           
  Misses        134      134           
  Partials       28       28           

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