[5.0][6.0] Use enums and build them like the current CustomFieldBehavior for sections/globalsets/fields

[Anubarak]

With the introduction of enums in PHP 8.1 we could actually go all the way to native enum support in the future.

For example you could integrate a Section, GlobalSet, Category and so on enum and create dynamic classes on the fly, when those datatypes are changed.

All functions could then be called via

// Sections.php
public function getSectionByHandle(SectionHandle $handle): ?Section

// another file - auto generated after save
enum SectionHandle 
{
    case Pages;
    case News;
    case Whatever;
}

or in twig

{# let's pretent you inject this enum into Twig and PHPStorm does the rest to autocomplete them fine #}
{% set entries = craft.entries.section(SectionHandle.pages).all() %}

[brandonkelly]

Agree that would be awesome :)