Start writing configuration class

COM3D2.MeidoPhotoStudio.Plugin/MeidoPhotoStudio/Configuration.cs

@@ -0,0 +1,7 @@
+namespace COM3D2.MeidoPhotoStudio.Plugin
+{
+    internal static class Configuration
+    {
+        public static bool ModItemsOnly { get; private set; } = false;
+    }
+}