Fix Logging in HarbourBridge

[manitgupta]

As part of #322 zap structured logging library has been integrated into HarbourBridge. We now need to fix the logging in Harbourbridge which is currently done through three mechanisms:

1. Using the Golang log package.
2. Using fmt.Printf statements.
3. Using custom verbose wrapper.

We need to change all the three instances above and streamline it to use zap logger everywhere.