Tag to hide a switch from the PAW entirely

[Rodg88]

An option like advancedTweakablesOnly, but without even showing the switch with advanced tweakables enabled would be useful.
It would allow a module with a single subtype to be used to switch a texture without changing the model, like on a +PART for example.
Or to have automatic upgrades getting applied using upgradeRequired and defaultSubtypePriority.