Restructure Lock to follow new paradigm

src/Core/Lock/Enum/Type.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Core\Lock\Enum;
+
+use Friendica\Core\Cache\Enum\Type as CacheType;
+
+/**
+ * Enumeration for lock types
+ *
+ * There's no "Cache" lock type, because the type depends on the concrete, used cache
+ */
+abstract class Type
+{
+	const DATABASE  = CacheType::DATABASE;
+	const SEMAPHORE = 'semaphore';
+}