Changes from 0.3:

• Port to 1.19.4
• Splits Hordes into two types. EntityTypeHorde, which is the equivalent to 0.3's horde class, and EntityEnumHorde.
• EntityEnumHorde is meant to make a system like ColdSnapHordes better supported and less janky, where Cold Snap Horde has to rewrite large portions of the code base for custom spawn rules. Using the enums, the consuming mod is expected to provide their own spawn method and is given the method to do so in.
• EnumHordeData can support any enum that extends RuleEnumInterface.