Update links to now missing shaders in the shader catalogue

[originalnicodr]

With the whole situation around Mortalitas and GShade, the GShade repository is gone, which means that some of the shaders that we have linked in the shader catalogue now have broken links.

We should try to find other sources (hopefully the original ones) where these shaders exist so we can correct their links.

List of shaders affected by this:

• BIAA: Bilinear Interpolation Anti Aliasing. Based on the temporal AA "Epic Games" implementation.
• TAA: Another TAA implementation.
• SSAO (HBAO, RayAO, HBAO, SSGI, AO_SAO, SSAO): The SSAO shader has all the ambient occlusion techniques in parenthesis.
• PPFX_SSDO
• MagicBloom
• PPFX_Bloom
• SimpleBloom
• PPFX_Godrays: If you want to add godrays to a scene then this shader can help you with that.
• Atmospheric Density: A more faithful fog simulation. You will need MShadersAVGen.fxh and MShadersBlendingModes.fxh. Alternative link in TreyM discord server.
• Retrofog2
• ThinFilm
• pkd_kuwahara
• CuttingTool_Depth
• AdaptiveSharpen
• FilmicPass: Applies some common color adjustments to mimic a more cinema-like look.
• Reinhard
• WatchDogsTonemapping
• FilmGrain2

Some of these effects are probably very outdated, but being the completeness fool that I am, I still believe its worth preserving these stuff.