Cherry Pick: Adding SubscriptionManagerFacade and MSIM support.

Adding SubscriptionManagerFacade for MSIM Functionality.
Adding Minor MSIM updates to TelecomManagerFacade.

Link to Android Partner Code Review:
https://partner-android-review.googlesource.com/#/c/185204/

Change-Id: I9e576c9f7f170fed0500f4e4fbc46bf8dc3532df
4 files changed