Add project filtering to Bitbucket Cloud import

What does this MR do?

This MR adds filtering functionality to BitBucket Cloud imports. It adds a simple input field that passes entered input to Bitbucket as a query string.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content