WireGuard
Use alternate method for quick-tile
This change removes the need for the permission to draw over other apps.
Personally, i find this permission a bit intrusive, so i tried to find a different mechanism to start up a tunnel. The new one uses a trick to start an activity completely invisible, and immediately move it to the backstack.
The only drawback that i found is that the quicktile-menu immediately disappears on clicking the tile, instead of slowly closing.
The abrupt disappearance of the quicktile-menu could be improved by providing an alternative layout to the TunnelToggleActivity which is only show when it was called by the quicktile.
Generally this is only an issue when the app was in background and no tunnel is available, otherwise the quicktile works as intended.
I have added a dummy-progressbar which will be shown in case the app was in background. It stays for 1000ms and then closes itself, after the tunnel has been triggered. This makes the transition way more visually pleasing.