IMS: Peer capabilities support

Add support for querying peer capabilities

IMS: Add support for HD icon display related information

Added support to pass the restrict cause associated with the peer
in order to enable display of the HD icon when necessary.Added
support to pass local audio codec information and defined values
for new codecs not defined.

Change-Id: If05d46bdb3907a0ec7efdde48337a7932a7a5c21