beremiz

6337c9c2c379
MQTT: add JSON payload corresponding to IEC Structured types

- uses https://github.com/cesanta/frozen
- frozen.c is added as a resulting c file in generat_C (fix toolchain_gcc.py as it was breaking dependency checking)
- structured types are converted to C #define, in turn generating json_scanf and json_printf statements
Title,Ingredient A,Ingredient B,Ingredient C,Ingredient D,Ingredient E,Ingredient F,Ingredient G
Recipe 1,1,2,3,4,5,6,7
Recipe 2,2,3,4,5,6,7,8
Recipe 3,3,4,5,6,7,8,9
Recipe 4,4,5,6,7,8,9,10
Recipe 5,5,6,7,8,9,10,11
Recipe 6,6,7,8,9,10,11,12
Recipe 7,7,8,9,10,11,12,13