feat: mesop cloudrun gemini app

[ghchinoy]

Description

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Fixes #1387 🦕

[holtskinner]

Please resolve linting errors as well https://github.com/GoogleCloudPlatform/generative-ai/actions/runs/11782270743/job/32816928938

[ghchinoy]

Please resolve linting errors as well https://github.com/GoogleCloudPlatform/generative-ai/actions/runs/11782270743/job/32816928938

All linter issues resolved

[ghchinoy]

Please resolve linting errors as well https://github.com/GoogleCloudPlatform/generative-ai/actions/runs/11782270743/job/32816928938

All done