Organisation of regional setting

Change the organisation of regional settings to be more testable.

Add tests

Add test for Lorawan 1.0.4 and correct some bug

Try add ESP8266

Try to make it compile for ESP8266 (no board to test)

Correct AES on avr

Due to a bug in avr implementation of std::array in https://github.com/ciband/avr_stl need to change init of array.

Add Class C feature to the library

Add Class C feature.

see esp32_classC example

Republish

Re publish for platformio push

Add a fake radio and some other correction

Add a fake radio for test.
Try to build on generic plateform for testing.
Use std::array when possible

Full Changelog: v2.1.2...v2.2.0

Correct some warning and publication framework

Add compatible framework for platformio.
Add RAK811 exemple.
Correct some warning.

First real release

v2.1.1

Change verison to correct incorrect publication.