Move code files into the src/ folder. Fixes #6098

[sminnee]

No description provided.

[tractorcow]

Bootstrapping Core.php and messing around with the path seems a pain. Maybe make it a proper class with a single static method init, and rely on class autoloading?

include_path shouldn't be necessary for anything other than legacy libraries pre-psr-4/0 really.

[tractorcow]

You could write it such a way that legacy code still works.

<?php

class Core {
    protected static $init = false;
    public static function init() {
        if (static::$init) {
            return;
        }
        static::$init = true;
        // init everything
    }
}
Core::init();

And now everywhere you had:

require_once $frameworkPath . '/Core/Core.php`;

You can now just

use SilverStripe\Framework\Core\Core;
Core::init();

[sminnee]

I've gone with include_path because although I think that moving towards the use of classes is a good idea, I'd prefer to do that as part of a more considered refactor of the Core.php code. It's a bit soupy, and I'd prefer not to simply pour the soup into a class.