add missing serializers (not complete)

Core/Routers/Serializers/BundleSerializer.cs

@@ -0,0 +1,6 @@
+namespace Core.Routers.Serializers;
+
+public class BundleSerializer
+{
+    
+}

Core/Routers/Serializers/NotifySerializer.cs

@@ -0,0 +1,6 @@
+namespace Core.Routers.Serializers;
+
+public class NotifySerializer
+{
+    
+}