[Feature Request] Add Multiple Blur Shaders

[menvae]

Blur Shaders Include:

• Gaussian
• Zoom
• Radial
• Motion

Might require a new param type for shaders to select a specific type instead of cluttering the shader dropdown.
tldr; Make shaders be able to have a dropdown option but I don't know how handling the events will be like if it's a dropdown instead of separate shaders, override?