Optimize and clean up DistanceMeasurement(Manager,NativeInterface,Tracker)

- Use lambda expressions for conciseness
- Improve encapsulation
- Static import various
  DistanceMeasurementMethod.DISTANCE_MEASUREMENT_METHOD*

Bug: 394958283
Test: m BluetoothInstrumentationTests
Test: m .
Flag: Exempt refactor no-op
Change-Id: If562b7da4e1765f347e0c39103109de98aaa50b7