[MediaRenderer] Fix lost renderer and added Status Changed signal

Remove renderers when a lost renderer signal is received. And
add support for Status Changed signal on the MediaController.

BUG=XWALK-2532
BUG=XWALK-2574
Bump version to 0.120
[Bluetooth] clean up bt adapter initialization
bluetooth_refactoring

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>
Add LOG_DBG logs

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>

Conflicts:
	bluetooth/bluetooth_instance_capi.cc
PostAsyncReply / PostCmdSend

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>