fish bucket variants

Sealed buckets now have a new can-shaped texture to have a more uniform color.

Fixed extended view shading issues and tweaked the size of random fish question marks.

Water colors are changed to match biome water colors in extended view and shape of the water spill depends on the relative size of the fish.

Tropical fish buckets trim now only appears if the bucket does not contain at least one of the four tropical fish type data.(pattern, base_color, pattern_color, bucket entity data) this means in vanila survival, tropical fish buckets no longer have trims.

Fixed all missing models issue due to lack of fallback models.

Fixed pack format was using 1.21.6 datapack format value(80, now it's 64)

Pack icon has been updated.

Compatability with 1.21.7 have been checked.