btstack_tlv_flash_bank: fix validation for full flash bank

btstack_uart_posix: assert no pending read/write opration

btstack_audio: use named struct initializer

btstack_audio: extend api to query the current sample rate

platform/lwip: add getter for netif provided by bnep

BNEP adds an interface to lwip. Add an accessor to allow us to get
access to it.

btstack_flash_bank: write empty tag instead of overwriting existing tag with ENABLE_TLV_FLASH_WRITE_ONCE

platform/lwip: Fix freertos NO_SYS=0 compile issue

If NO_SYS=0 it uses freertos stuff like xQueueCreate, so needs to
include the headers.

bnep_lwip: return bool in bnep_lwip_outgoing_packets_empty

bnep_lwip: use generic btstack_run_loop_execute_on_main_thread

platform/embedded: fix unused warnnings

btstack_stdin_embedded: use timer to poll RTT input, fix for tickless RTOS

chibios: start EFL driver

platform: add ChibiOS

platform/embedded: fix unused warnnings

btstack_tlv_flash_bank: use std int types

libusb/hci_transport_h2_libusb: fix compile without log_error

hci_transport_libusb: use to btstack_assert and some refactoring

hci_transport_libusb: fixed undefined ENABLE_SCO_OVER_HCI behaviour

hci_transport_libusb: disable warnings on transfer cancelation for darwin

hci_transport_libusb: fix transfer cancelation

hci_transport_libusb: usb_sco_start/stop support

hci_transport_libusb: debugging version of which should keep more transfers in flight

fix other warnings

embedded: compile SEGGER RTT code only if enabled

btstack_audio_embedded: add missing include