Vibrant Legacy Rewrite

Added Concrete, Concrete Powder families PBR support.
Added Sulfur Caves' fog.
Eliminated Meadow's, Jagged Peak's Volumetric Fog.
Lava's fog in The Nether is now more invisible.
Tweaked fog_start, fog_end, max_density for Basalt Deltas, Crimson Forest, Hell, Soulsand Valley, Warped Forest fog.
Tweaked max_density, max_density_height, zero_density_height about Volumetric Fog for some specific biomes such as Forest, Jungle, Mangrove Swamp, Mesa, Mushroom Island, Savanna, Snow families (except Cold Taiga), Swampland and Taiga.
Tweaked Mesa's sun colour a little bit at sunrise.
Tweaked Pale Garden's ambient lighting.
Updated client_biome to format_version 1.21.120.
Updated manifest.json