Description

As a developer, I want a simple API to git service that can run different detection mechanisms in a git repository. 

Acceptance Criteria

1. Should create a simpler API for git repository detection.
2. Should converge all the detection mechanisms of git service into one.
3. Should use extensible APIs to make it easy to add new feature detection mechanism in future.
4. Should enable authentication of git service using source secrets. 

Additional Details:

1. No need to make the git service usable by dynamic plugins for now.