1.21.6-1.21.8 (#1518)

* 1.21.6-pre2

* Port HUD and 1.21.6-pre3

* 1.21.6

* New Rendering System

Also updates YACL and fixes a bug with rendering slot highlights

* Fix Item Rarity Background having a random iteration order

With Java's immutable maps they will either iterate forwards or
backwards which is randomly decided at runtime.

* Fix GUI text not rendering

If the colour parameter supplied does not have an alpha value or is 0
then the text is not rendered.

* Fix crimson fog extension

* Fix health bar rendering

* Fix hiding world loading screens

* Disable mixin unit test due to crash and add audit command

* 1.21.7 + Update Gradle, Loom, and JGit

* Update Dandelion for 1.21.7

MoulConfig still has a few bugs but its ok otherwise

* Fix checkstyle & spotless

* Update Mixin Name

Maybe this will fix the game test crashing because of GL errors?

* Fix waypoint screen draw order

* Fix issues with text not rendering in GUIs

* Use local state management for renderer

* Significantly improve batching for the renderer

Makes the new renderer even better/faster than the old RenderLayer
system!

* Separate Skyblocker's glow from vanilla's glow

Fixes #1478
Fixes #1500

* 1.21.8

* Fix dungeon teammates not glowing through walls

* Fix some map decorations not rendering (dungeon teammate markers)

* Fix recipe book search field text being invisible

* Update README and issue templates

* Fix issues with entity glow depth sampling

Should also fix a crash with Iris

* Add batching exclusion system

Fixes a bug where rendering multiple cylinders at once would have the
two linked to eachother

* Fix spotless errors

* Fix Iris crash

* Update Dandelion/MoulConfig

* Update to Fabric Loader 0.17.0

Fixes the Mixin Unit Test crashing

* Attempt to fix game test

* Disable game test rendering stuff