hci: notify if SCO can send now - triggered by DAEMON_EVENT_HCI_PACKET_SEND and if can send sco now is true

hci: notify if SCO can send now - if SCO flow control is enabled

hci: add hci_can_send_acl_classic_packet_now and hci_can_send_acl_le_packet_now

hci: extracted hci_number_free_acl_slots_for_connection_type

hci: remove callback for local information - use hci_add_event_handler instead

hci/sm: use btstack_packet_handler instead of (*fn)(type,packet,size) for events

hci: replace hci_register_packet_handler with hci_add_event_handler

hci: dispatch events via callback registration

hci: add hci_add_event_handler, tunnel events through hci_emit_event and acl packets through hci_emit_acl_packet

split remote_device_db into btstack_link_key_db and btstack_device_name_db

linked_list: stop using linked lit item context in hci, sm,bnep, and rfcomm

remote name caching: moved from hci.c into daemon.c

move btstack_version.h to platform/daemon and only use by daemon

use little/big_endian_read/store_16/24/32

use for event types

hci_transport: cleanup struct, add init(void *transport_config)

hci: better debug output for baud rate change

hci: added local version information callback to allow for runtime driver selection

ios: fix compile, streamine function names

remove btstack_control_h from hci_init. mark btstack_control, hci_transport, and hci_transport_config as const

bt_control_t: drop hw error field

chipset: remove all chipset functions from btstack_control.h and use from hci.c

hci: add hci_set_chipset and set it for all ports

hci: enable hci_emit_btstack_version even if EMBEDDED

hci: enable storing/retrieving device name even if EMBEDDED