Support for logging when making REST calls

[fiboknacky]

In the Google Ads API client library, some people may select to make a call using REST instead of gRPC.
Or with some reasons, they cannot use the gRPC extension on their system.

In that case, we probably still want to them to be able to use the logging feature so they can troubleshoot the issues and report them to us, when needed.

Knack

[dmachehin]

Is there any plans for implementation?

[kanevbg]

Will be nice