Glass style GUI

Adjusted some details.
Added some missing textures.
Added nautilus gui texture.
Added loading screen. (require puzzle mod)
Added support of REI.
Revamped exp bar. (again)
Revamped appleskin texture.

-Revamped hardcore heart icon, half heart icon, armor icon and experience bar.
-Removed blinking heart.
-Made the widget buttons into glass style.
-Added social interactions and tooltip textures.
-Added some particle textures.
-Added support of serval mods. (chatpatches, commandkeys, litematica, inventoryprofilesnext, modmenu, soundcontroller, transparent entities, firmament, skyblocker, sba unofficial)

-Revamped hardcore heart icon, half heart icon, armor icon and experience bar.
-Removed blinking heart.
-Made the widget buttons into glass style.

Translucent parts are back cuz Minecraft now support translucent gui texture from 1.21.2.
You need some specific mods to keep the texture translucent below 1.21.2 (check description).
Also reworked advancement gui textures.

Adjusted some details.