Migrate to EV3Dev

[jacobcxdev]

Migrate the LeJOS project to an ev3dev-lang-java Gradle project to take advantage of OpenJDK 16.

• [x] Compile and deploy OpenJDK 16 for EV3
• [x] Migrate LeJOS project to Gradle project
• [x] Create Gradle tasks to build and deploy to EV3
• [x] Add unimplemented dependencies (NXT sensors, chassis stuff, and MovePilot)
• [x] Complete dynamic part initialisation system
• [x] Project integrity check (does it still work?)

[jacobcxdev]

There's one really annoying issue which is totally wrecking the EV3's ability to move accurately: motor synchronisation doesn't seem to be implemented in ev3dev-lang-java's port of LeJOS' navigation stack, so whenever the EV3 moves, the motors are delayed slightly which messes up the orientation of the robot. I might try and implement motor synchronisation, but I'm pretty sure that would require writing a kernel module for the EV3Dev kernel which I really don't want to have to do… Anyway, everything else appears to work fine.