add a second group of user tokens for syntax coloring

[Wolfgang]

CVI provides the ability to use syntax coloring (which is nice )

Right now, C keywords share one color - these keywords include the data types int, double, ...

Unfortunately, the boolean types (bool defined by stdbool.h), including the macros true and false, and the size and pointer difference types are not included, e.g. size_t, intptr_t, ...

This is not a problem because CVI also allows adding user-defined tokens for coloring, it even provides the option to add the VISA types.

In that sense we have the possibility to have core and extra types marked in two different colors - which is also nice.

Now I'd like to mark (my) constants as well, in a different color, and this is not possible.

My suggestion thus is to add a second group of user tokens, which can be colored differently.

Thanks