Adaptative fog to hide chunks border

With this feature, the fog appears depending on the chunks loaded. I can explain if a world has trouble loading or when loading a world, we all agree that seeing the limit of chunks is a bit disturbing because it is ugly. To solve this problem, we could make the fog appear instead of the not yet loaded chunks. Instead of having a circle, the fog would appear instead of the chunks that are not yet loaded, even if it doesn't appear as a circle. This is to hide the limit of the chunks. The fog would dissipate little by little to have a smooth transition between the loaded chunk and the not loaded chunk