feat(google_genai): add generate_images tracing support#161

Abhijeet Prasad (AbhiPrasad) wants to merge 2 commits intomainbraintrustdata/braintrust-sdk-python:mainfrom

abhi-feat-google-genai-generate-images-tracingbraintrustdata/braintrust-sdk-python:abhi-feat-google-genai-generate-images-tracingCopy head branch name to clipboard