avrcp_controller: rename avrcp_send_cmd, and use AVCTP packet type

avctp_controller: introduce AVCTP_W2_SEND_AVCTP_FRAGMENTED_MESSAGE state

avrcp_controller: calculate AVCTP fragment size based on l2cap mtu and max AV/C message size

avrcp: rename connection state from AVCTP_W2_SEND_FRAGMENTED_COMMAND to AVCTP_W2_SEND_FRAGMENTED_MESSAGE

license: update text

avrcp_controller: implement avrcp_controller_get_now_playing_info_for_media_attribute_id

avrcp_cotroller: handle notification registration reject

avdp/avrcp: remove log_error when returning error code

avrcp_controller: rename variables

avrcp_controller: fix compile

avrcp_controller: rename event

avrcp_controller: deregister only if events are already queried, and event is supported

avrcp_controller: return on wrong response type

avrcp_controller: event id range check

avrcp_controller: report notification status only initially, after registration

avrcp_controller: emit AVRCP_SUBEVENT_ENABLE_NOTIFICATION_COMPLETE if notification is requested, but found not supported after supported events query

avrcp_controller: remove duplicate check

avrcp_controller: remove status as input param

avrcp_controller: introduce first and last index for iteration over avrcp_notification_event_id_t items

avrcp_controller: emit AVRCP_SUBEVENT_ENABLE_NOTIFICATION_COMPLETE

avrcp_controller: automatically query supported events when registering for notifications

avrcp_controller: use get_capabilities_for_connection

avrcp_controller: extract get_capabilities with connection parameter instead of cid

avrcp_target: avrcp_controller_register_notification returns status

avrcp_controller: extract avrcp_controller_emit_supported_events and store remote supported events into bitmap