Add satellite gateway service definition

Bug: 275633844
Test: Call/SMS/MMS with live network. Wil add a mock satellite gate service for testing in CTS.
atest android.telephony.cts.SatelliteManagerTest
atest com.android.internal.telephony.satellite.SatelliteSessionControllerTest

Change-Id: Ic8906f1b880a210f995b13b3e86064cb84ef82c3