Self Managed CS implementation.

Implementation for self-managed connection service APIs.

Add ability for self-managed CS to:
- register a phone account and have it be auto-enabled.
- add ability for self-managed calls, ensuring only self-manage calls
can be added.

Add implementations for new isXCallPermitted APIs.
Filter self-managed calls from InCallServices.
Ensure self managed connection creation doesn't use emergency call CS.
Add ability to set audio route from self-managed connection
Overhaul some of the CallsManager getCallsWithState methods to support
other use cases for self-managed calls (also use steams/filters.. Ooo aah)

Test: Manual
Bug: 34159263
Merged-In: I3131fd48ee5c5aa36c0e88992fa51879af07d495
Change-Id: I3131fd48ee5c5aa36c0e88992fa51879af07d495