avrcp: remove connections from context, use one list of connections in avrcp. connection lookup is not yet extended to check the role

avrcp: add role to connection

avrcp: remove browsing flag from create SDP record as it is pat of supported features

avrcp: introduce enum for suported features

avrcp_controller: trigger notification registration after response was received

avrcp: fix compilation for c++

avrcp controller: playback position change rate set to one sec, pass playback position changed event

avrcp controller: fix parsing of now playing info

GAP: security level for Classic protocols (asides SDP) raised to 2 (encryption)

avrcp controller: add press and hold cmds

avrcp_controler: fix warning

avrcp_controller: add avrcp_controller_send_custom_command that fragments outgoing commands

avrcp_controller: drop l2cap cid param

avrcp controller: update event name, add fields for notification

avrcp_controller: rewrite parse attribute parsing

avrcp_controller: fix parsing of attributes with length == 0

avrcp browsing: implemented adding media item to now playing

avrcp browsing controller: adding now playing functionality

avrcp: use byte parser for segmented packets

avrcp controller: use max num fragments to limit num fragments that the controller can accept

avrcp: set addressed player, get total num items

avrcp browsing controller: fragmentation for get folder items

avrcp browsing: AVRCP msg fragmentation

avrcp browsing: handle incoming avrcp connection

avrcp browsing: change API for folder/media browsing