esp32: prefix audio sink globals

esp32: extract btstack_audio_esp32_es8388_initialized

esp32: cleanup audio code

esp32: implement volume control for LyraT v4.3 board

esp32: enable BR/EDR, LE, or BR/EDR?LE based on sdkconfig

esp32: update CMakeLists.txt file

This commit updates the esp32 CMakeLists.txt so that it is compatible
with the new way of creating CMakeLists.txt files in ESP-IDF.

Basically it replaces the old r

esp32: update CMakeLists.txt file

This commit updates the esp32 CMakeLists.txt so that it is compatible
with the new way of creating CMakeLists.txt files in ESP-IDF.

Basically it replaces the old register_component() with
idf_component_register().

It also removes the relative references to lwip. This is because some
projects might want to puse btstack directly in their private "components"
folder (instead of being placed in the esp-idf/component folder)

It has been tested both by:
- placing btstack in esp-idf/components
- placing btstack in my_own_project/components

and it compiled Ok using "idf.py build"

Tested "pan_lwip_http_server" and compiled Ok as well.

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ports: add link to documentation in btstack_config.h

esp32: add yml to cmake build

btstack_config: use official terms for l2cap channel modes - ENABLE_L2CAP_LE_CREDIT_BASED_FLOW_CONTROL_MODE

license: update text

esp32: fix example cmake project

esp32: provide hci_dump_embedded_stdout.c

esp32: fix project files for HSP/HFP examples

hci_dump: esp32 port

esp32: enable wide-band speech, disable secure connections for hfp/hsp demos

esp32: fix delete examples script

esp32: fix audio sink driver

esp32: unify i2s configuration

config: add ENABLE_PRINTF_HEXDUMP

config: sort defines alphabetically

update python scripts to python3

esp32: reduce log output for tlv