Widget for Bitbucket build status (to support Bitbucket Pipelines)

[Ben G]

Our team uses Bitbucket Pipelines for our tests/builds. It would be awesome if we could see a list of our branch builds using atlasboard. At the moment this is works for Bamboo but not Bitbucket Pipelines.

I've built a new widget for this, will raise a PR when it looks stable after a bit of testing.

[Iván Loire]

I would love to review and include it @bgummer

[Ben G]

I just opened a PR :)

https://bitbucket.org/atlassian/atlasboard-atlassian-package/pull-requests/55/feat-bitbucket-builds-widget/diff