[MEP] Integrate IccSlotStatus and SimSlotMapping AIDL changes.

Apart from AIDL changes integration, below refactoring tasks are done.
1. Moved getIccId related APIs from UiccCard to UiccPort.
2. Refactored UiccSlot and UiccController to support multiple active ports.

Test: atest FrameworksTelephonyTests, Manual verification
Bug: 203741760
Change-Id: I59ad60847fcc2b9868ffc4f338cb17de5b64374d