Initial version of freemodbus master port files have been added to ESP-IDF based on https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32.
The overall repository license, at the time of adding these files, has been BSD 3-clause. However at that time, several port files carried LGPL license headers. As the author of these files confirmed in https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32/issues/61#issuecomment-977828450, this wasn't intentional. ESP-IDF version of modbus master port has been rewritten to target FreeRTOS instead of RT-Thread, but the license headers remained from the original version. This commit corrects this, replacing the license of these files with BSD 3-clause.
* Replaced crypotoauthlib with esp-cryptoauthlib
* Added menuconfig option for esp-tls about using HSM
* Added error codes for HSM in esp-tls,
* Added support to select different type of ATECC608A chips
* Added README, updated docs
* tcp_transport: Added option to enable secure_element for ssl
Closes https://github.com/espressif/esp-idf/issues/4432
1. BLE Mesh Core
* Provisioning: Node Role
* Advertising and GATT bearer
* Authentication OOB
* Provisioning: Provisioner Role
* Advertising and GATT bearer
* Authentication OOB
* Networking
* Relay
* Segmentation and Reassembly
* Key Refresh
* IV Update
* Proxy Support
* Multiple Client Models Run Simultaneously
* Support multiple client models send packets to different nodes simultaneously
* No blocking between client model and server
* NVS Storage
* Store Provisioning Data of BLE Mesh Nodes in Flash
2. BLE Mesh Applications
* BLE Mesh Node & Provisioner
* Node Example
* Provisioner Example
* Node + Generic OnOff Client Example
* Fast Provisioning
* Vendor Fast Prov Server Model
* Vendor Fast Prov Client Model
* Examples
* Wi-Fi & BLE Mesh Coexistence
* Example
* BLE Mesh Console Commands
* Example
3. BLE Mesh Models
* Foundation Models
* Configuration Server Model
* Configuration Client Model
* Health Server Model
* Health Client Model
* Generic Client Models
* Generic OnOff Client
* Generic Level Client
* Generic Location Client
* Generic Default Transition Timer Client
* Generic Power OnOff Client
* Generic Power Level Client
* Generic Battery Client
* Generic Property Client
* Generic Server Models
* Generic OnOff Server (Example)
* Lighting Client Models
* Light Lightness Client
* Light CTL Client
* Light HSL Client
* Light xyL Client
* Light LC Client
* Sensor Client Model
* Sensor Client
* Time and Scenes Client Models
* Time Client
* Scene Client
* Scheduler Client
added docs and tests for mqtt library, small fixes (removed warnings, option for custom outbox, websocket bug fixed for longer transports). refactored to use common tcp_transport component, support for CMake build system.
Closes#2108
