Introduce signal collector service

This service will be responsible for managing collector lifecycles and
tracking states for attribution purposes.

Bug: 419591336
Flag: com.android.server.signalcollector.enable_binder_call_signal_collector
Test: atest FrameworksServicesTests

Change-Id: Ib345ac5d8d61dd73c6dd77f2a453bc28b809ebdd