ESP8266 / EPS32 more special tool to store the sourcecode in the flash-rom

[mrburnette]

@StefanL38

but a tool that copies the actual sourcecode to a subfolder of subfolder "data" and then using the existing LittleFS-Data-Upload-Tool.

Espressif's tool is just a flat-file system. It is partition aware:
https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/storage/spiffs.html