Initial implementation of BiometricManager TestApis

1) Finishes Face10 test implementation

2) Adds createTestSession and getSensorProperties to
   IBiometricAuthenticator. This way, BiometricService, which
   is the source of truth for all sensors is able to implement or
   forward TestApi requests as appropriate.

3) Removes a few unused parameters (callingUid, callingPid,
   callingUserId)

4) Moves proto def to a biometric proto. This is basically the
   common TestApi equivalent for getting states of _any_ sensor
   service (FingerprintService, FaceService, etc)

5) Moves AuthSession states to biometric.proto

6) Updates SysUI components to use separate positive buttons
   for better readability and testing

Bug: 171357779
Test: atest CtsBiometricsTestCases on fingerprint/face devices
Test: atest com.android.server.biometrics

Change-Id: I5d884d4a9f4afa3f947eb4587e869bacd6b2f805