feat: Add more granular config for model observability during deployment

[tiopramayudi]

Description

Adding model_observability configuration that contains:

• Enable -> Whether the model observability is enabled or not
• Ground Truth Source -> The source for ground truth which later on will be use to ingest ground truth
• Ground Truth Job -> The Job configuration to ingest ground truth
• Prediction Log Ingestion Resource -> Resource configuration for observability publisher worker, currently we use default value that is set on platform level

Modifications

• Modify swagger
• Regenerate python client from modified swagger spec
• Modify model_observability model
• Update deployment of observability publisher worker
• Update merlin sdk so user can supply model_observability config during deployment

Tests

Checklist

• Added PR label
• Added unit test, integration, and/or e2e tests
• Tested locally
• Updated documentation
• Update Swagger spec if the PR introduce API changes
• Regenerated Golang and Python client if the PR introduces API changes

Release Notes

[deadlycoconuts]

Thanks a lot for the extensive changes @tiopramayudi ! Everything looks good as it is; I only just left a couple of tiny questions but feel free to merge this any time you're ready 🚀