Update native SDK for ESP8266 to 3.0.0

[Droncz]

Hello, any chance of updating the build environment, so it works with a new version of the native RTOS based SDK (https://github.com/espressif/ESP8266_RTOS_SDK)?
This kinda relates to #79 so You would actually kill two birds with one stone ;-)

Thanks.

[vshymanskyy]

There's already v 3.0.0 but it consists of major component refactoring

[Random90]

Update would be awesome. Current version is based on community package written few years ago, and nobody updated it yet. Is ESP8266 slowly replaced by ESP32?

[bwssytems]

Would really like to have V3.0.0 of the RTOS Framework since the code written for ESP-IDF will work with this. Sometimes you need an 8266 instead of the 32

[maxgerhardt]

Push! This seems to occur over and over again; Espresif RTOS SDK is already at 3.1 now.

[WallaceWilliam]

try it
https://github.com/WallaceWilliam/framework-esp8266-rtos-sdk-idf-platformio