Assets Basic Skyboxes 1 - Basic Sky

1- Use AI tools to enhance original images while reducing the size.Better clarity than the previous version.
2- Moon nights seem to be the most frequently used, so I separated a category of "moonnight" and increased the number to seven, including full and dark moons, with different heights in the sky.
3- Increase the overall number from 12 to 31(contains all the skyboxes of the previous version “basic Skybox 1+2”). but the var file size has been reduced from over 200M to 130M.