Add OP_EMERGENCY_LOCATION appop to allowed appops in the Privacy

Dashboard

Add OP_EMERGENCY_LOCATION appop to the list of appops whose access
entries should be displayed in the Privacy Dashboard.

Export location flag library to be used by Permission Controller

Flag: NONE no change should be behind a flag

Bug: 325536053
Test: atest PermissionHistoryTest#openLocationTimeline_whenEmergencyLocationIsNoted_showAccess
Change-Id: Ia7bde9a272e04488f4add8b44a443ab1d44ed499