Plugins + Scripts CUAshaderMod

• Shaders are now applied on every OnCUALoaded event. This gets triggered by using the asset-slider in the [Asset]-tab for example. It takes a snapshot of the original material and then applies the shader. This happens instantly. So don't be confused if the original material is never visible.
• Changed the shader choice popup style from scrollable to filterable. Added a "Popup always open"-toggle. I'm aware this change is a mixed bag because losing the ability to quickly scroll through all shaders is bad. I still prefer the filter to search for "transparent" for example. Don't see an easy way to have both at the same time unfortunately.