PoC integrate with non-Github.com git-provider

[amirbey]

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User Story

A Federalist user should be able to use various repository services for their sites

Background (Optional)

Acceptance Criteria

• [ ] <TODO>
• [ ] Change made live via <TODO>.

After evaluating, edit this part:

Level of effort - <low/medium/high>

Implementation outline (if higher than "low" effort):

• [ ] <TODO>