Add --generate-pyproject-config CLI option

[koxudaxi]

Summary

• Add --generate-pyproject-config CLI option that outputs the current CLI arguments as a [tool.datamodel-codegen] section for pyproject.toml
• This makes it easier for users to convert their CLI arguments into a reusable pyproject.toml configuration

[codspeed-hq]

CodSpeed Performance Report

Merging #2551 will not alter performance

_{Comparing add-generate-pyproject-config-option (194d813) with main (4dc4480)}

Summary

✅ 32 untouched

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.83%. Comparing base (4dc4480) to head (194d813).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2551   +/-   ##
=======================================
  Coverage   98.82%   98.83%           
=======================================
  Files          68       68           
  Lines        8443     8496   +53     
  Branches      840      846    +6     
=======================================
+ Hits         8344     8397   +53     
  Misses         71       71           
  Partials       28       28           

Flag	Coverage Δ
unittests	98.83% <100.00%> (+<0.01%)	⬆️

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