Add SipDelegateManager create/destroy AIDL connections

Add internal AIDL connections and wrappers required to
implement SipDelegateManager#createSipDelegate and
SipDelegateManager#destroySipDelegate.

Bug: 154763999
Test: atest TeleServiceTests
Change-Id: Ia6e813c9f17b834af7dcc10438cd8ba2388833bd
2 files changed