gap: store link key for standard/non-SSP pairing

# Conflicts:
# CHANGELOG.md

Merge branch 'develop'

# Conflicts:
# README.md
# chipset/zephyr/nrf5340_dongle/README.md
# port/libusb/README.md
# src/hci_transport_h5.c

changelog: update

btstack_version: provide current release version

avdtp_util: move drc field at the end of AVDTP MPEG AAC events definition

example: update le_audio_demo_util_source + mod_player for hxcmod update

esp32: enable audio driver by default on esp32, esp32c3 and esp32c6

esp32: use synchronous VHCI API with newer ESP32 variants (esp32,-c3, s3 use asynchronous API)

bnep: provide setup connection response in BNEP_EVENT_CHANNEL_OPENED

gatt_client: use Find by Information Request to lookup CCCD for Notifications/Indications

changelog: update

sdp_server: skip empty attribute lists in search search attribute response

btstack_util: skip whitespace in btstack_atoi

hfp_ag: start codec negotiation only for the first audio connection

sdp_client: iterate over registered SDP query callbacks

avdtp: streamlinw avdtp_handle_sdp_client_query_result, only register new query if connection is waiting

l2cap: set extended flow control bit in information response if enabled

rfcomm: fix multiple outgoing channel setup

gap: only store link key if at least one side requests bonding during the IO Capabilities exchange.

gatt-service/dis-client: update for dis v1.2

ble: add tx power service client

ble: add link loss service server and client

ble: add immediate alert service server and client

ble: add gatt_service_client

gatt-service/hids-client: use error code instead of att status