feat: Bitbucket Adapter

[jonathanbecerra]

Bitbucket Adapter

• Integrated Bitbucket adapter using Bitbucket's authentication documentation.
• There are many scopes that can be added. Refer to Bitbucket OAuth 2.0 scopes for the actual list of scopes supported by oauth2.

  • Keep in mind they do mention in the docs OAuth 2.0 documentation the following statement:

    Our OAuth 2 implementation is merged in with our existing OAuth 1 in such a way that existing OAuth 1 consumers automatically become valid OAuth 2 clients. The only thing you need to do is edit your existing consumer and configure a callback URL.

    Therefore, using the endpoints for oauth2 should not affect anything.

• Overrode the scopes[] to use a union for type safety. Same as the SlackAdapter (GitHub Pull Request #101).