Add masking to VFX shader modules

[Luramoth]

Describe what are you aiming to achieve
I think it would be a very useful feature if like in Poiomi there could be a way to mask VFX fragment effects on certain modules (eg. the 'ghost lines' in the ghost lines module) because it would be really nice to only have those effects on certain parts without having to take up entire material slots and making patterns on a per-polygon pasis

Describe any workarounds you can use now
the only thing i can think of is writing these masks in myself but i do not have the know-how on how to write these myself int he current moment

Any other comments or context/references
i dont really have much her for reference but what i do know is nearly every effect in Poiomi uses masks and in my experince in UE5 shader graph masks would be utilised on top of liniar interpolation with the mask's fragment data being used as the alpha

[orels1]

Good suggestion 👍 I'll take a look after the v7 release