Benigamer's enhanced visuals

-backport to 1.21.1

• improved rain
• improved other particles
• added falling leaves for pale and cherry

• added leaves interacting with water
• added a better night sky(requires optiboxes mod)
• added options
• walking and water splash particles
• end portal eye glow
• lots of new desert particles

• new cave/void fog
• some particles remade
• overhauled nether particles
• cave dust
• optimization
• natural spawning fireflys
• removed grass model
• air dust desert/snow

• added torch glow
• campfire particles
• rain changes