Bluetooth: SAP: Add SAP profile support in Settings APP

This change consists of:,
 16 digit Authentication
 SAP profile connection status changes
 SAP Disconnect from server related changes

Change-Id: I57870a75c30e03b3c244d56e9b55a1367490bfc9
Bluetooth: DUN: Add DUN profile support in Settings APP

It registers service listener for DUN profile with the
BT adapter, and it will track the profile status with
the service listener state chnages.

It also has support for DUN profile connection status
updation and DUN Disconnection from server.

Change-Id: I83d4919821cb095429ff7e73a8974d92c4df086c