[12.x] Add scoped macros to Macroable

[Perturbatio]

This adds the ability to scope macros to the class on which they were defined.

I've added separate scopedMacro and hasScopedMacro methods to make it clearly distinguishable when used and hasGlobalMacro as a method to check the contents of the $macros property specifically.

hasMacro will check both the default macros and $scopedMacros for the given macro

If a scopedMacro is present when the method is invoked, it will be preferred over a global one (which has the effect of also allowing a user to override a macro for a given implementation without breaking others).

The benefit of this is the ability to add a macro to a class and have it not invokable on another class which extends it.

For example:

A package "Ape" provides a base class which extends Livewire/Component (which is macroable)
Another package "Baboon" extends this package's base class to provide its own functionality and implements a method whereby macros defined using a specific name e.g. afterRender

If I define afterRender on a class which extends "Ape", that macro is also available on "Baboon" which may be unintended.

A more real world example can bee seen in the FilamentPHP PR here filamentphp/filament#16763 where implementing the beforeFill macro on EditPage results in it being invoked on ViewPage also since that extends BasePage and uses the same form for display.

[Perturbatio]

I ran pint on the codebase prior to pushing and it wanted to change more files than just mine, I reverted all but the two I had modified to keep the PR restricted to them. Is there a tool I should be running rather than pint for code style?

[taylorotwell]

Thanks for your pull request to Laravel!

Unfortunately, I'm going to delay merging this code for now. To preserve our ability to adequately maintain the framework, we need to be very careful regarding the amount of code we include.

If applicable, please consider releasing your code as a package so that the community can still take advantage of your contributions!