Add Config service

src/services/Config.vala

@@ -0,0 +1,32 @@
+/* Config.vala
+ *
+ * Copyright 2023 oupson
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+namespace Footerm.Services {
+    public class Config {
+        private static Config instance = null;
+
+        public static Config get_instance() {
+            if (Config.instance == null) {
+                Config.instance = new Config();
+            }
+            return Config.instance;
+        }
+    }
+}

src/services/meson.build

@@ -1,2 +1,3 @@
 footerm_sources += files(
+	'Config.vala'
 )