Telecom Emergency call diagnostics logger

Core logic to trigger diagnostics on (potential) errors
Decides type of data to be collected

The actual data is collected from telephony service since
Telecom runs as part of system_service (b/28035297)

Bug: 271900116
Test: atest EmergencyCallDiagnosticLogger
Change-Id: Ia40a74fd5acb509c3ebda53b6e6e04bbd12be436