Headunit

This is an Android Auto Headunit emulator, based off of the work of Mike Reidis and Alex Gavrishev.

Things I've changed / added:

• Cleaner & more performant codebase
• Multi-touch support
• Proper fullscreen / immersive mode with hidden system bars
• Re-implemented TLS layer in Kotlin using Java APIs, avoiding C in codebase, making app more portable & smaller and simplifying the build process.
• Trust any connected phone, so once phone is connected, app will immediately launch.

Currently requires API level 18 (Android 4.3), can easily be made to support API level 16 (Android 4.1) (USB bulkTransfer needs to use alternative method on older APIs)