Implement interface support

[nykwono]

This PR implements full support for being able to use interfaces.

Contents:

• Through a macro, you're able to have any scripted classes implement source code interfaces (For example: IScriptedClass from Funkin')
• You're also able to your create own scripted interface to be used for any scripted class.
  • With this, you're also able to extend other interfaces (including base ones!) for your interface like in regular Haxe.
• You're able to use Std.isOfType / is to check whether a field is a given interface (this includes fields of source code classes also, and checking for source code interfaces).

Limitations:

• Because HScript isn't typed, unfortunately interfaces aren't type checked while checking if the class satisfies it. This would be hard to do manually because of HScript's limitations of not being typed. However, most of everything else is checked for (The interface field existing, it being the right kind, etc.).

[TechnikTil]

[realvirtu]

[ahmed7p]

When interfaces extending normal interfaces the game crashes with the lime null object window with weird bug in the terminal with out crashlog and extending ScriptedInterfaces closes the game with out any error at all like the game just close no errors no log nothing it just close + implementing does nothing it's like doesn't do anything i used it i tried to get any of the errors of not having the funtion nothing shows i tried implementing Scripted and Source ones all the same so that's what i have

i don't see any other reviews (til didn't test it) so idk if it's only me

some screen shots

[nykwono]

The errors should be fixed now, appreciate you reporting them.

As for the last image of it not giving any errors, this is intentional in a sense. The interfaces start to give you errors only when trying to instantiate the class as that's when it tries to validate the interfaces. I was considering having it so it would give the errors nonetheless, but I felt that would be too much of a hassle trying to do though and most script class errors that happen in Polymod that are normally syntax errors in Haxe are thrown at runtime anyways. Not to mention the regular use case for interfaces are meant for class instances so nonetheless you are going to get the validation errors regardless lol.

Though, if someone else on the crew would rather want to request for that change I wouldn't mind trying to attempt it.

[ahmed7p]

Ok everything works good now

[nykwono]

Pushed a final fix relating to validating interfaces since i accidentally fucked it up but the PR should be fully good now!

[TechnikTil]

This PR has merge conflicts...