NVIDIA Shield Support and a whole lot more

NVIDIA Shield Support Release

New features
 - Native support for NVIDIA Shield devices!
- Remote Style Override: Regardless of the kind of device you own, you
can switch your Firemote card to look like a completely different remote
control.  If you were very clever, you probably knew of a way to do this
already, but now it's built in!
 - Visible Device Name Color Choice: As requested in #44, you can now
choose a different color for the visible device name text.  As of right
now, it should work properly on any Amazon style remote, but it is not
yet ready for the Shield version.
 - Sometimes apps made for the Amazon Fire world weren't the same as the
apps made for other Android TV style devices which needed to be sorted
out.  If you've used Firemote for any non Amazon Fire devices, you may
have come across this problem before, as @moh-Brent discovered in #30.
These issues have been all sorted out under the hood which will
absolutely result in a better experience

New App Shortcuts
 - OQEE by Free #39
 - TiVimate #32, #48
 - SmartTubeNext (STN) #48
 - Sky News #49
 - IPVanish #49
 - VTM GO (BE) #50
 - Streamz (BE) #50
 - VRT MAX (BE) #50
 - Freevee

I'd like to give a HUGE thank you to @MRobi1 & @jrspowers for their help
as beta testers! #47