Support Resize Texture with multi-selecting Textures

[Cubouse]

Detailed description of your suggestion

When having multiple textures loaded with one model, it is not possible to resize them all at the same time.

The model changing its Texture Size with every Resize Texture can make the process more confusing too, as well as some textures turning to flipbook animations unintentionally because of the format relative to the model.

I wish you could resize all selected textures at once (whatever Texture Size is input would be applied to all, indiscriminately of original size? If operations are possible, that's a plus)