Add shaders

[yavko]

Shaders from #22
also closes #22
todo:

• move to subdir
• get images of the shaders, prob with capture card or vm
• get more

[yavko]

I need screenies, if anyone here wants to help. That'd be sick

[Gliczy]

Only missing three: blur and bloom, which I couldn't load, and drugs which didn't look good on my screenshot.

• Bluelight
  
• CRT
  
• Monochrome
  
• Vibrance
  

[yavko]

Sick thanks so much!

[miku4k]

Got a screenshot of drugs that conveys what it does somewhat clearly I think:

(holy shit it's trippy to look at the screenshot with the shader still active)

[yavko]

Got a screenshot of drugs that conveys what it does somewhat clearly I think:

(holy shit it's trippy to look at the screenshot with the shader still active)

Perfect I'll try to find time to complete the pr today

[vdawg-git]

https://github.com/Visual-Dawg/space_dots/blob/main/.other/orig.frag
Also this CRT shader from my space dots :D (Just stumbled upon this PR, and might be cool to add)