Adding model and config parameters to extract()

[mariano]

Description

Adds config and model to extract() while maintaining full backward compatibility.

• Added two new settings to extract():
  • config: An optional ModelConfig.
  • model: An optional BaseModel implementation.
• Parameter precedence in extract() for model selection is as follows (from
  chosen first to last):
  • model
  • config
  • model_id (with api_key, temperature and model_url)
  • language_model_type (deprecated.)
• Dropped unused constraints from extract()

Fixes #106

How Has This Been Tested?

All tests succeed with:

$ poetry run pytest tests/

Checklist:

• I have read and acknowledged Google's Open Source Code of conduct.
• I have read the Contributing page, and I either signed the Google Individual CLA or am covered by my company's Corporate CLA.
• I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
• I have made any needed documentation changes, or noted in the linked issue(s) that documentation elsewhere needs updating.
• I have added tests, or I have ensured existing tests cover the changes
• I have followed Google's Python Style Guide and ran pylint over the affected code.

[github-actions]

Running live API tests... This will take a few minutes.

[github-actions]

✅ Live API tests passed! All endpoints are working correctly.

[aksg87]

Hi @mariano thanks for the PR looks great. Just some minor updates suggested in #120 — If you can add these in that would be great!

[mariano]

Hi @mariano thanks for the PR looks great. Just some minor updates suggested in #120 — If you can add these in that would be great!

Sorry about those styling issues. Incorporated your changes manually and left your PR untouched since it was targeting the the main branch on your repo rather than my fork.

[aksg87]

Thanks @mariano, really appreciate the PR!