[WIP] GamepadAuxState functionality

[mikepparks]

This is to lay groundwork for implementing auxiliary/specialty features into the various Gamepad modes. This is data that may be shared between several modes, rather than in use by all modes, such as haptics/rumble and IMU/motion devices.

Currently defined:

• Primary/secondary "profile" colors
  • PS4/5: primary color lightbar color
  • Switch: future use for Pro controller grip and body colors
• Sensors
  • 2D: touch/trackpad
  • 3D: Gyroscope, accelerometer, magnetometer
  • 4D: Time of Flight
• Haptics
  • Actuators: simple rumble motors, or more complex waveform haptics
  • Triggers: Future planning for resistive triggers