add dms-plugin-dev agent skill for plugin development (#2394)

.agents/skills/dms-plugin-dev/assets/templates/daemon/Settings.qml

@@ -0,0 +1,16 @@
+import QtQuick
+import qs.Common
+import qs.Widgets
+import qs.Modules.Plugins
+
+PluginSettings {
+    pluginId: "myDaemon"
+
+    StringSetting {
+        settingKey: "configValue"
+        label: "Configuration"
+        description: "Value used by the daemon"
+        placeholder: "Enter value..."
+        defaultValue: ""
+    }
+}