Config: Add initial implementation

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>

src/logic/config.vala

@@ -0,0 +1,36 @@
+/* config.vala
+ *
+ * Copyright 2025 Vasiliy Doylov (NekoCWD) <nekocwd@mainlining.org>
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+class Singularity.SingConfig : Object, Json.Serializable {
+    public List<Outbound.Outbound> outbounds { get; owned set; default = new List<Outbound.Outbound> (); }
+    public override Json.Node serialize_property (string property_name, GLib.Value value, GLib.ParamSpec pspec) {
+        if (property_name == "outbounds") {
+            var node = Utils.serialize_object_list<Outbound.Outbound> (outbounds);
+            var arr = node.get_array ();
+            arr.foreach_element ((_, __, node) => {
+                var _node = node;
+                Utils.fix_type (ref _node);
+                Utils.fix_dash (ref _node);
+            });
+            return node;
+        }
+        return default_serialize_property (property_name, value, pspec);;
+    }
+}

src/logic/meson.build

@@ -1,4 +1,5 @@
 utils_sources = 'logic/utils.vala'
+config_sources = 'logic/config.vala'
 
 singularity_deps += [
   dependency('json-glib-1.0'),
@@ -11,4 +12,5 @@ singularity_sources += [
   utils_sources,
   outbounds_sources,
   transports_sources,
+  config_sources,
 ]