Expose the RCS UCE APIs for capabilities request with presence mechanism.

The contact's capabilities request APIs are exposed to be the SystemAPI and add the CTS for these APIs.

Build: 174656329
Test: atest -c CtsTelephonyTestCases:android.telephony.ims.cts.RcsUceAdapterTest
Change-Id: Id8a3be587f200dfee8f7c6343ed771e7ac738568
7 files changed