Please prioritize this blocking issue. Many of us are wading through the sea of bitbucket plugins, and never completely successful in achieving the right cocktail to provide the basic features needed for modern software development processes.
In addition to supporting the webhooks for all PR events, it's critical that the plugin expose the event detail to pipelines being triggered. That way, we can implement special features like performing pre-build merges so that the PR merge check of "minimum successful builds" can truly gate quality on the merge, i.e. noone can merge a PR until the hypothetically-merged source builds green. Just checking that the source branch is green is not sufficient, because unintended errors commonly creep in during a merge.
This last piece could be provided by your plugin, but I'd highly suggest you keep it simple for now and just implement the basic PR event web hook support, which should be quickly achievable and will unblock so many people.
@Niket, you can use this plugin for notifying build status to Bitbucket server. It works great for recent 7.x versions of BBS. https://github.com/jenkinsci/stashnotifier-plugin
Also, see more on this here.