Add AddonHelper::getAvailableAddons() method

src/Core/Addon/AddonHelper.php

@@ -14,6 +14,15 @@ namespace Friendica\Core\Addon;
  */
 interface AddonHelper
 {
+	/**
+	 * Returns the list of available addons with their current status and info.
+	 * This list is made from scanning the addon/ folder.
+	 * Unsupported addons are excluded unless they already are enabled or system.show_unsupported_addon is set.
+	 *
+	 * @return array<array<string|bool|array>>
+	 */
+	public function getAvailableAddons(): array;
+
 	/**
 	 * Checks if the provided addon is enabled
 	 */