Add example IBiometricsFingerprint@2.2 HAL

The exisitng 2.1 default implementation assumes that the device has
a pre-HIDL HAL. Keep this implementation intact for vendors with
legacy implementations.

This change adds a new example 2.2 HAL that does not assume the
existance of a pre-HIDL HAL, which can be used by cuttlefish
and CTS.

Bug: 172957689
Test: make -j android.hardware.biometrics.fingerprint@2.2-service.example
Test: atest CtsBiometricsTestCases
Test: m vts -j && vts-tradefed run commandAndExit vts -m VtsHalBiometricsFingerprintV2_1Target
Test: m vts -j && vts-tradefed run commandAndExit vts -m VtsHalBiometricsFingerprintV2_2Target
Change-Id: I4d87028d70fdb5c03759080e53e69751cf5e4307