[WIP] Add ApiOption overloads to methods on IRepositoryCommentsClient

[prayankmathur]

Fixes #1172

To Do

• Add overload to IRepositoryCommentsClient and IObservableRespositoryCommentsClient
• Implement the above methods in the respective classes
• Add unit tests for IRepositoryCommentsClient
• Add unit tests for IObservableRespositoryCommentsClient
• Add integration tests for IRepositoryCommentsClient
• Add integration tests for IObservableRepositoryCommentsClient

[alexander-efremov]

Hello @prayankmathur! I'm working on #1120 and as part of this feature I should add overloads to
I(Observable)RepositoryCommentsClient. But it's depends on this feature too, could you come back and finish this feature?:smile:

[alexander-efremov]

@shiftkey, @ryangribble this one can be close for now 👍

[ryangribble]

Replaced by #1310