Applying a Color Lookup Table to Textures for Custom Palettes

[GudBoiNero]

Ideally I would like to use any image from images/palettes to swap out the colors for any widget or texture I'm using at the time. For right now I'm simply using my custom implementation of Dear ImGui's ImageButtonEx() function. We use a special function utilizing a library stb_image.h to load all of our textures. Inside of this function is where we need to allow for the color lookup table to be implemented.

We would replace the colors like so:

Ideally I would like this feature to allow for an input of a file path or some way to use any palette you want.
Later on it would be great to allow for more colors in one palette- since we will allow custom textures.

[GudBoiNero]

https://learnopengl.com/Getting-started/Shaders
this should help a lot

[GudBoiNero]

I'll further explain this a little further, we need a module that allows the application of shaders to a texture. I'm going to be scrapping the texture heap and crap hash for now.