RCS Provisioning APIs for Single Registration

Bug: 154864150
Test: atest FrameworksTelephonyTests:com.telephony.ims.RcsConfigTest
Test: atest TeleServiceTests:com.android.phone.RcsProvisioningMonitorTest
Test: atest CtsTelephonyTestCases:android.telephony.ims.cts.ImsServiceTest
Change-Id: Ie9445dd450d175e0dc94b63b487dda5cde729123