Water freezing datapack support (+unfinished group simulation data)

Add should_freeze fetch value

Add requires_rain option

Fix not using precipitation pick odds

Refactoring

Support for snow melting to torches

Add block_brightness and block_brightness_above

Add snow datapack support + precipitation logic

Fix random pick probability not being included

Dripstone support

Remove turtle egg mixin

Turtle eggs datapack support

Add hatch_entity, hatch_count and starting_age settings

Make int/bool_property easier to use

Add is_sand_below fetch value