[AXON-149] (WIP) re-enable auth UI for bitbucket in RDE

[sdzh-atlassian]

What is this?

⚠️ Note: found some issues while submitting the PR - hence draft

• url parsing might be borked after rebase, somehow
• would be good to disable the save button in BB cloud

This PR enables the custom auth flow for Bitbucket in RDE, in the same way as JIRA - except using BB app password turned out to be a really poor substitute for JIRA API token, so that's not available ;)

The rationale here is to enable folks who use BB Server/DC to authenticate remotely from RDEs via PAT/basic auth

	Old	New
Local (no change)
Remote

UI after this:

How was this tested?

• Via dev-container, managed to authenticate against an available instance of BB DC