[SB Refactor] Implement the wifi network flow using the

NetworkCallback.

This migrates the information from NetworkCapabilitiesRepo into
WifiRepositoryImpl. So, we can now delete NetworkCapabilitiesRepo and
CollectivityInfoCollector (which was just listening to NCR).

This implementation should approximately mimic
WifiStatusTracker.mNetworkCallback, but in a hopefully much more
straightfoward way!

Test: manual: compared logs from old system and new system and verified
the wifi updates are the same in both
Test: manual: verified new pipeline output logs
Test: WifiRepositoryImplTest
Bug: 238425913

Change-Id: I8bbe6cc21cd1c1ae2c1d364b94a2fb87d0a7821e