Leverage GitHub Project status as downstream Jira issue status

[mattreid]

Sync2Jira doesn’t sync status from GitHub project metadata, it depends on PR associations to move issues up from New, although it will close issues when the upstream issue closes. It would be nice for teams that are focused upstream and have available GH projects metadata, to rely on that status value and sync it down into Jira, to keep progress transparent.

This might be similar to how a mapping for Priority values from GHP and Jira can be configured, so sync2jira can translate from one system to the other.