Allium Shaders

Additions:

• Scalable Render Resolution in shader settings for Screen Space Path Tracing and Volumetric Clouds. For a minor performance increase
• Added a blur for clouds to help with lower render resolutions - may look blurrier but also no more hard edge clouds. Helps to make them look a little softer

Fixes:

• Auto exposure is now a bit stricter, with less flickering
• Auto exposure going very dark to black when looking at highly emissive blocks
• Harsh lightmaps when raining, too much for auto exposure to adapt to
• Improved anti ghosting for path tracing temporal filtering