[NEW FEATURE] allow custom type and command enum on node_config.h and product_config.h

[nicolas-rabault]

As described in the documentation, product-related definition and enums should be put on a product_config.h .

But if I want to create and maintain my product App type list with the Luos offset or a custom command list, this will not work because I need to include luos_list.h first.

example :

typedef enum
{
    MY_APPLICATION_TYPE = LUOS_LAST_TYPE,
    MY_SENSORAPP_TYPE
} ;

The product_config.h is included using -include ../product_config.h on the platformio.ini file that's why you don't have any luos related values.

We have to find a way to make it.