drop connection from sdp register/unregister

move sdp_emit_service_registered to daemon

lookup connection by l2cap/rfcomm cid for data packets

drop connection from rfcomm_register_packet_handler callback

drop connection from rfcomm_register_service_internal and rename to rfcomm_register_service

lookup connection by rfcomm cid in daemon

lookup connection by l2cap cid in daemon

drop void * connection param from l2cap packet handlers

replace l2cap_unregister_interal with l2cap_unregister

use l2cap_register instead of l2cap_register_internal, move service registered event generation to daemon

create rfcomm_create_channel and rfcomm_create_channel_with_initial_credits that don't use connection. use in daemon

use new l2cap_create_channel in daemon

use daemon_client instead of incorrect gatt_client

rename internal function

fix paths after source reorg

separate platform specific code and ports for a particular setup

sort out embedded implementations

sort btstack.h for client/server use

use singular for root level folders