Enhancement: Add optional multiplier parameter for ConVar material proxy

[ErinRoseWebs69]

What would this enhancement be for?

Rendering

Describe your enhancement suggestion in more detail

Currently $color, at least via pulling ConVar values, requires a 0-1 color range, but this breaks cvars such as cl_portals_sp_primary_color and cl_portals_sp_secondary_color, as those require a 0-255 color range. Allowing the material proxy to utilize both 0-1 and 0-255 range would be great for cvar pulling or other material proxy shenanigans

[TeamSpen210]

This doesn't really need to be built in? Define a material var with a custom name, write to that, then use a Multiply proxy after MaterialModify to do the multiplication. You could even just keep the one variable, and use it both for srcVar1 and resultVar.

[JJL772]

Might be nice to have as shorthand syntax.

[TeamSpen210]

True, several other proxies have a scale option.