Investigate/support Azure DevOps MI/SP auth

[DrChat]

ADO is migrating over to managed identity / service principal auth over PAT authentication.

In order to support this, we would need to have a way to capture a bearer token from a caller and pass it on to any request we make to Azure DevOps.
See if there's a way to do it by encoding the bearer token into the URL. If not, find a standardized way to allow users to pass in the bearer token to us.