Add support for BitBucket to the Selective Builds feature

[viktorbenei]

Note: we now have a new feature request for built in Bitbucket Selective Builds, similar to the GitHub one - please vote & comment there!

Bitbucket selective builds

Description of the feature request Add support for selective builds for Bitbucket. Use case / for what or how I would use it As a previous closed feature request 6612(can’t comment/re open) I’m working with monorepo and need to start builds only when the shared or mobile part of my repo has been modified. Right now, I am evaluating through git diff inside a script but it is not efficient since the actual build has been launched and git repository cloned. This wastes resources just to find ou…