ESP_IDF integration

[mmokhtar761]

I tried a lot to integrate the library to IDF platform. It always can't include "Firebase_ESP_Client.h"
I wrote the cmake file as follows:

idf_component_register(SRCS "src"
INCLUDE_DIRS "src"
)

[mobizt]

You can't compile it for esp-idf directly as it depends on Arduino framework.

Please follow this to use Arduino as component.