Implements custom skyboxes into vanilla Minecraft

1. Press the green ⤓ Code button and select "Download ZIP"
2. Extract the folder inside the ZIP into your resourcepack folder
3. Download a skybox you'd like to enable. This shader uses the optifine format for skyboxes, so search for those (some of these work)
4. You'll need to find the textures in the resourcepack you downloaded. Try looking for a texture that has a 3:2 aspect ratio and looks like the sky. Pick one for day and one for night
5. Place the day and night skyboxes you found into the assets/minecraft/textures/effect folder and rename them skybox-day.png and skybox-night.png (Make sure you don't name them skybox-day.png.png)
6. Launch the game and enable the resource pack, then in video settings choose the Fabulous! option for Graphics

Largely built upon sun-position from https://github.com/bradleyq/shader-toolkit

Please credit when used.