IClickEventAction and IHoverEventAction

[Ecdcaeb]

What this pr brings

• The new interfaces, IHoverEventAction and IClickEventAction, abstract action processing into methods.
• Make ClickEvent.Action and HoverEvent.Action implement these interfaces and invoke them at the appropriate time.
• They wrap a IHoverEventAction or IClickEventAction, which allows content to be added by an EnumHelper, just like an EnumEnchantmentType.
• Dynamic NAME_MAPPING

What this pr leaves

• The old NAME_MAPPING. It has not been removed directly to maintain compatibility with Actions added by past mods.

What this pr deletes

• <clinit>s of Action, which simply implement NAME_MAPPING
• cache the action in method, do not always if(event.getAction() == XXX)

What this pr could be used for

Enable the modder add some magically cool hover and click effects in a hackinless method!

[kappa-maintainer]

I noticed that you are modifying GuiScreen, how's this change's compatibility to current mod?

[Ecdcaeb]

I noticed that you are modifying GuiScreen, how's this change's compatibility to current mod?

I only modified the part that handles HoverEvent and ClickEvent. In theory, there will be no compatibility issues. I will do compatibility testing later.

[Ecdcaeb]

It seems OK.