Dragon Survival

Test version to support the new dragon type addon from Psither!

• Adds a way to track registered subtypes and changes required methods to save and sync your current subtype.
• All main dragon types have the same name subtype as type by default, and are registered as subtypes of themselves.
• You can extend existing dragon types and define your own subtype's name, and then you can register them as a subtype that shares cosmetics and passives.
• Active abilities now check your subtype, while passives and innates use a copy of the main type. Because all normal types are now sub-types of themselves, this won't change your abilities. Subtypes also share the wing effect.
• Updates the /dragon command to read subtypes so you can use it to transform freely into subtypes.
• The save data now saves and checks subtype instead of type, if it is present in the save data, for compatibility with older saves.
• The claw and skin systems still use the main type.