feat: add support for Enum casts, Attribute-based accessors, Output Modifiers

[superbiche]

This is an early PR to open a discussion on the following improvements (see #3):

• Generate types for Eloquent Model "enum" casts
• Generate TS enums for these Enums so we can use those during runtime (Enum must implement a new ModelEnum interface to be picked)
• Generate properties for the new Attribute-based accessors
• Introduce the concept of OutputModifiers to create a pipeline of modifiers that will change the generated content before its written to a file
• Add strict types declaration

What must be done before merging it:

• Write tests
• Update README
• ?

What would be nice to have, but can totally be done later:

• Reduce code duplication (phpClasses() / phpEnums)
• Maybe refactor AbstractGenerator so it's less coupled to classes and also allows enums
• Don't hardcode the Enum suffix, make it configurable
• Don't hardcode the EnumArray suffix, make it configurable

This is a "quick and dirty" implementation that was written on the go for a project I'm working on, but it works quite well - right now we can use the generated typings as-is without modifying those manually.

It does need some polishing before merging it.

Also I've copied the files from what I've written by hand so there may be a few typos, missing use statements...
I just wanted to publish it as soon as possible to collect feedback, and take some time the next weekend to polish it accordingly.

Thanks in advance for your feedback :)

[lepikhinb]

Thanks for the PR! I’m going to review it and give a more detailed answer once I’m at the workplace.

[tcampbPPU]

Very interesting approach! @superbiche I was working on similar functionality over at https://github.com/fumeapp/modeltyper
What all is difference between ReflectionEnumBackedCase instead of using something like:

$enum = (new ReflectionEnum($enumClass));
$enum->getConstants()

I am still trying myself to figure out all the new reflection stuff for enums

[rollsover]

@superbiche Why was PR abandoned? There is information?

[superbiche]

@rollsover nope, it's waiting for a review by the maintainer

[rollsover]

@lepikhinb need review

[rollsover]

@superbiche can you remove the "draft" mark and put a reviewer?

[superbiche]

@rollsover nope, I can't add a reviewer and there's still some work left like writing tests & docs. I'd like to get a review first before spending time on tests and documentation. But feel free to review it too!

[Healyhatman]

+1