mesh: implement sig and vendor model app list

mesh: implement mesh client configuration model appkey bind/unbind messages

mesh: implement mesh client configuration node identity messages

mesh_configuraiton_client: implement netkey and appkey messages

mesh_configuraiton_client: subscription get and list messages

mesh: implement model subscription messages

mesh: fix MESH_SUBEVENT_PROXY_CONNECTED

Event does not have a status field

hfp_hf: fix HFP_SUBEVENT_SPEAKER_VOLUME and HFP_SUBEVENT_MICROPHONE_VOLUME definitions

Both have no status field

mesh_configuraiton_client: implement config model publication set/get/status

avdtp: introduce is_initiator param in accept and reject events

mesh: rename configuration client events, send raw data for composition data event

mesh: client relay proxy msgs [a2490]

mesh: client configuration GATT proxy msgs [a2482]

mesh: client configuration default TTL msgs [a2481]

mesh: configuration client, define and send MESH_SUBEVENT_FOUNDATION_BEACON_STATUS event"

mesh: remove element and index, add destination and status to status event

mesh/health_server: add acknowledged flag to perform health test event, don't block for reponse

mesh/health_server: implement clear registered faults internally, remove unused events

gat_client: rename status to att_status in GATT_EVENT_QUERY_COMPLETE event, add and use ATT_ERROR_SUCCESS instead of 0 status code

a2dp source: add A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE event, rename related AVDTP event into AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE

avdtp: add DELAY_REPORT event

btstack_event: use reverse_bytes to avoid cast to bd_addr_t

gap: support reading RSSI for Classic+LE using gap_read_rssi. Emits GAP_EVENT_RSSI_MEASUREMENT

mesh: health server events and handlers: period and attention get/set/set_unacknowledged

mesh: health_fault_test_handler and MESH_SUBEVENT_HEALTH_PERFORM_TEST event