Support for OpenAI's .with_raw_response.

[lrafeei]

This PR adds support for .with_raw_response. prepending to HTTP method calls in OpenAI.

Currently, the New Relic instrumentation will instrument this, but during the collection of custom AI event attributes, this modified response type (LegacyAPIResponse) will result in a crash.

This is part 1 of two PRs. The second part will cover the streaming version of this functionality, .with_streaming_response.

[github-actions]

🦙 MegaLinter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	bandit	1		0	5.35s
✅ PYTHON	black	7	1	0	2.37s
✅ PYTHON	flake8	7		0	0.88s
✅ PYTHON	isort	7	1	0	0.35s
❌ PYTHON	pylint	7		31	5.56s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

MegaLinter is graciously provided by

[codecov-commenter]

Codecov Report

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

Project coverage is 81.45%. Comparing base (8b79e6c) to head (679f97a).

Files	Patch %	Lines
newrelic/hooks/mlmodel_openai.py	86.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1138      +/-   ##
==========================================
+ Coverage   81.38%   81.45%   +0.07%     
==========================================
  Files         192      192              
  Lines       21345    21358      +13     
  Branches     3715     3715              
==========================================
+ Hits        17371    17397      +26     
+ Misses       2885     2872      -13     
  Partials     1089     1089              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.