Convert All Logging to Structured Zap Logger

[ChayanDass]

We have moved to Zap Logger for structured logging. The entire codebase still contains many old or unstructured log statements. All of these need to be converted to use Zap for consistency and better observability.

[Joshna907]

I'd like to take this up. Could you assign me this issue, please? @ChayanDass

[ChayanDass]

Just create a pr .

Suggestions: split this in multiple pr , one pr per file . For easier review

[Joshna907]

Just created first pr please do check !!