Implement AddonHelper::loadAddons()

src/Core/Addon/AddonHelper.php

@@ -39,6 +39,13 @@ interface AddonHelper
 	 */
 	public function uninstallAddon(string $addonId): void;
 
+	/**
+	 * Load addons.
+	 *
+	 * @internal
+	 */
+	public function loadAddons(): void;
+
 	/**
 	 * Reload (uninstall and install) all updated addons.
 	 */