esp32: add set_port.sh tool (unix only) to set serial port for esp tool

esp32: store LE bonding information using le_device_db_tlv

esp32: enable support for LE Data Length Extension

esp32: remove debug output for btstack_stdin

esp32: add btstack_stdin support

esp32: fix a2dp_audio_source build

esp32: mention CONFIG_BLUEDROID_ENABLED, update esp-idf

esp32: use malloc for btstack stuctures

esp32: update sdkconfig with default values

esp32: implement btstack_tlv.h interface on top of esp-idf nvs storage

esp32/freertos: don't create thread for BTstack. make run_loop_execute block - same as all other ports

esp32: enable link key db memory for now

esp32: pulled esp-idf

esp32: update sdkconfig

esp32: use micro-ecc from esp-idf

esp32: drop single_threaded attribute from function names

esp32: disable packet log, disable host controller to host flow control until fixed in host controller implementation

esp32: use data source instead of 'execute on main thread' to deliver packet sent and received HCI packets

esp32: don't use btstack_run_loop_freertos_single_threaded_execute_code_on_main_thread_from_isr anymore

esp32: add len tag to packet ringbuffer, use HCI_PACKET_BUFFER_SIZE instead of reserving space for 3DH5 packets

esp32: update code for component/bt/lib @ 0986936

freertos: provide btstack_uart_block_freertos_single_threaded.c

esp32: add filetags

esp32: enable Controller to Host Flow Control

esp32: prepare example template