Integrate Tor Browser for Android into tor-browser-build

The Tor Browser Hacking Guide has some instructions for manually building Orfox: https://trac.torproject.org/projects/tor/wiki/doc/TorBrowser/Hacking#BuildingOrfox

We need to integrate the build of Orfox and all components of Tor Browser for Android into tor-browser-build.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information