Camera2: Use ColorSpaceTransform and RggbChannelVector, replace enum byte[]

Also fix a minor bug in ColorSpaceTransform copying validation.

Affected keys:
  android.colorCorrection.transform
  android.colorCorrection.gain
  android.control.aeAvailableAntibandingModes
  android.control.aeAvailableModes
  android.control.afAvailableModes
  android.control.availableEffects
  android.control.availableSceneModes
  android.control.availableVideoStabilizationModes
  android.control.awbAvailableModes
  android.edge.availableEdgeModes
  android.hotpixel.availableHotPixelModes
  android.lens.info.availableOpticalStabilization
  android.noiseReduction.availableNoiseReductionModes
  android.sensor.calibrationTransform1
  android.sensor.calibrationTransform2
  android.sensor.colorTransform1
  android.sensor.colorTransform2
  android.sensor.forwardTransform1
  android.sensor.forwardTransform2
  android.statistics.info.availableFaceDetectModes
  android.tonemap.availableToneMapModes

Bug: 14628001
Change-Id: Ic0a3ff0aaa6bfe872cf8fb740870618c3eee3008