Arke

Add the new shadow ui as a resource pack.

Some minor tweaks to existing guis and fixed the colouring of shulker boxes.

Port to 26.1

If you run into any serious issues or have suggestions (preferably minor) please leave a message on my discord: https://discord.gg/9VB8t5TAMM

For the most part I think the only noticable user facing change is the new gui textures... If you have Modmenu installed you will also see a new "Arke Library" mod that'll share some code with future projects.

There's lots still to change but I need a mental reset on the progress I've been making... Some notable changes still required are:

• Considering unique gui textures for each block rather than per category
• Making minecarts use the unique gui textures
• Increasing the contast in the guis
• Reworking the Mini Chest gui to be smaller but with a bigger slot
• (and more I haven't thought of right now)

Added aliases for the menu used by mini chests.