[Feature] Switch from TimedRobot to Opmode while maintaining CommandsV2

[LordVanra]

https://docs.wpilib.org/en/latest/docs/software/basic-programming/opmodes.html

Replace per-mode methods in Robot (autonomousInit, teleopPeriodic, utilityInit, utilityPeriodic etc.) with separate @autonomous, @TELEOP, and @Utility opmode classes