Mirror Fenix source tree from Github

On our meeting Monday, we talked shortly about what to do with having our own copy of the Fenix tree. We were talking about whether we should leave out the master branch like it is being done with the torbrowser tree. If we want to go down that path, which brances should we cherry-pick and push to Tor's Gitlab?

The Mozilla project is at https://github.com/mozilla-mobile/fenix