Add an option to map a specific status to backlog for Team Managed Projects

Requirement:

• Unlike Company Managed projects, where we can map status to the backlog, in a team managed we cannot do it.
• If we put an issue in backlog, it will not show up on baord, if we move it to board, it will start showing up on board (in team managed) 
• In company managed when we move issue from backlog to status, the issue transitions to status mapped to first column of board. On mobing issue back to backlogs, transitions it to status mapped to the backlog

Use Case:

• If user wants to transition status automatically when moved from backlog to board, it can't be done as there is no specific status mapped to Backlog.