Add an Autoloader based on the Plugin Directory, for autoloading of utilities

[dd32]

This makes it easier to use the included utilities, such as #330 without having to manually include the files.

[dd32]

There's a number of other variants of this in use on WordPress.org, all of which are the same as this one, just in a different namespace.

I'm going to promote this to being \WordPressdotorg\Autoload and move it out of the Utilities folder in the process.

plugins/rosetta/rosetta.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/rosetta/rosetta.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/rosetta/rosetta.php-}
plugins/rosetta/rosetta.php-
plugins/rosetta/rosetta.php-// Register an Autoloader for all files.
plugins/rosetta/rosetta.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php-}
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php-
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php-// Register an Autoloader for all files.
plugins/wporg-gp-translation-suggestions/wporg-gp-translation-suggestions.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-routes/wporg-gp-routes.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-routes/wporg-gp-routes.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-routes/wporg-gp-routes.php-}
plugins/wporg-gp-routes/wporg-gp-routes.php-
plugins/wporg-gp-routes/wporg-gp-routes.php-// Register an Autoloader for all files.
plugins/wporg-gp-routes/wporg-gp-routes.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php-}
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php-
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php-// Register an Autoloader for all files.
plugins/wporg-gp-theme-directory/wporg-gp-theme-directory.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php-}
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php-
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php-// Register an Autoloader for all files.
plugins/wporg-gp-plugin-directory/wporg-gp-plugin-directory.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php-}
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php-
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php-// Register an Autoloader for all files.
plugins/wporg-gp-rosetta-roles/wporg-gp-rosetta-roles.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );
--
plugins/wporg-gp-customizations/wporg-gp-customizations.php:if ( ! class_exists( '\WordPressdotorg\Autoload\Autoloader', false ) ) {
plugins/wporg-gp-customizations/wporg-gp-customizations.php-	include __DIR__ . '/vendor/wordpressdotorg/autoload/class-autoloader.php';
plugins/wporg-gp-customizations/wporg-gp-customizations.php-}
plugins/wporg-gp-customizations/wporg-gp-customizations.php-
plugins/wporg-gp-customizations/wporg-gp-customizations.php-// Register an Autoloader for all files.
plugins/wporg-gp-customizations/wporg-gp-customizations.php-Autoload\register_class_path( __NAMESPACE__, __DIR__ . '/inc' );