Fix simulator: JS module registration, rotation direction, and starter code

- Fix aidriver JS module registration: use Sk.builtinFiles instead of
  non-existent Sk.builtinModules so Skulpt 1.2.0 loads the JS module
  with proper suspension support and real ultrasonic sensor readings
- Fix call order: register modules AFTER Sk.configure() to prevent
  builtinFiles from being reset
- Fix processCommandQueue: remove re-entrant callsimOrSuspend into
  Python interpreter, read commands from AIDriverStub queue instead
- Fix rotate_left/rotate_right: swap wheel speed assignments to match
  real hardware where right motor is physically flipped
- Fix collectTrace: save/restore JS module around trace collection
- Update Challenge 3 starter code to use simpler distance check pattern
- Bump version numbers for cache busting

Author: benpaddlejones