Add formal deprecation notices for reviewboard.hostingsvcs.service.
Review Request #14584 — Created Sept. 4, 2025 and submitted — Latest diff uploaded
A while ago, we moved most of the actual base hosting service
implementation into submodules ofreviewboard.hostingsvcs.base. The
servicemodule had forwarding imports and a comment about deprecation,
but we didn't have any actual deprecation warnings. This adds
deprecation warnings for everything in that module, and updates
dependent code to use the new names.
Ran unit tests.