Add MotionPredictorMetricsManager API

Adds the code for MotionPredictor to interface with the
MotionPredictorMetricsManger, with empty implementations
for the ...MetricsManger methods.

Test: `atest libinput_tests` passes.

Bug: 268245099

Change-Id: I514bea52ae914b181ed7aeb84581a30f2ebaed70
3 files changed