Add support for Azure Repos as a source control provider

[angrybrad]

https://azure.microsoft.com/en-us/products/devops/repos/

Would only need to support the source control part - i.e. nothing else under the Azure DevOps umbrella.

[angrybrad]

Can only find one other app that appears to have done this:
https://docs.fossa.com/docs/azure-repos

Docs: https://learn.microsoft.com/en-us/azure/devops/repos/?view=azure-devops