feat: expose request and token counts

[mtth]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 92.72%. Comparing base (359566d) to head (36217f0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/git_draft/drafter.py	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
- Coverage   92.89%   92.72%   -0.18%     
==========================================
  Files           9        9              
  Lines         577      591      +14     
  Branches       47       50       +3     
==========================================
+ Hits          536      548      +12     
- Misses         27       28       +1     
- Partials       14       15       +1     

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