Add observability and security part of the providers

[subramanya1997]

It would be great to see basic observability and security features integrated directly into BaseProvider class.

Observability:

1. Logging: Track API calls, errors, and performance metrics for better debugging.
2. Tracing: Integrate with OpenTelemetry for distributed tracing across providers.
3. Metrics: Expose latency, throughput, and error rates to monitor provider performance.

Security:

1. Input Validation: Mitigate risks like prompt injection and ensure PII masking.
2. Response Filtering: Enable moderation to filter sensitive or unsafe outputs.

These features would enhance reliability, transparency, and safety.

[abhiramvad]

Can i pick this up?

[abhiramvad]

Added this Pull Request for logging and observability. Will add a PR for security and performance metrics once this is merged