feat: bulk delete branches

[bethesque]

No description provided.

[vwong]

LGTM.

Question: Do we have any other code that behaves like this? Ie, do the action after an immediate response?

How would the API indicate completeness? Maybe the response should return a URL that the consumer can query to check on complete-ness?

[bethesque]

Do we have any other code that behaves like this? Ie, do the action after an immediate response?

This is the first. I'm doing it this way because I know we've had problems in the past with performance when deleting large number of things.

Maybe the response should return a URL that the consumer can query to check on complete-ness?

You make a very good suggestion, but I'm not willing to do that amount of work for a feature that will be used maybe once per installation. If it was a key feature that would be commonly used, then yes, that would be the ideal pattern.

The idea is for the customer to use branch-merge or branch-deletion events in their SCM to clean up the deleted branches as they go using the individual branch delete endpoint. Calling this batch endpoint would be a once off task to clean up all the previously deleted branches.