Support draft PRs for Bitbucket (same as Github/Gitlab)

Description of the feature request

Might already be on your radar, but opening here anyway to double check.

Similar to what is already supported today for Github and Gitlab, it would be great if draft Bitbucket MRs can be supported as well.

It is a new feature from Bitbucket, but I assume that this info is already available via their webhooks, based on their docs below.

Use case / for what or how I would use it

To skip running a pipeline/workflow when a MR is marked as Draft.

Similar to what was done here: Build Triggers: Disable builds for draft pull requests