Filter VOIP call logs

Adds ability to filter the voip call entries from the call log depending
on a provided key. If the key is enabled (false by default), then
querying the call log will include those entries.

Bug: 435498803
Flag: com.android.server.telecom.flags.filter_voip_call_logs
Test: atest CallLogProviderTest
Change-Id: Ibff0e2fdd1a41fc8959fdbe825307bc61838894e