Split subscriptionManager

With feature flag ON, known issues:
1. work messenger crash when receive
message.
2. unassigned SIM is accessible to telecom, so accessible to
work dialer - it's expected behavior is till in discussion.

Bug: 296076674
Test: Make call and send messages from both profiles in split mode, all
personal mode, and work only mode

Change-Id: Ic6b6beacf0ee1bc84aadcfff55ae6fb2945044f6