fix: file structuring (#2797)

* fix: file structure changes

* fix: pages update

* fix: license imports changed

apiserver/plane/app/serializers/notification.py

@@ -0,0 +1,12 @@
+# Module imports
+from .base import BaseSerializer
+from .user import UserLiteSerializer
+from plane.db.models import Notification
+
+class NotificationSerializer(BaseSerializer):
+    triggered_by_details = UserLiteSerializer(read_only=True, source="triggered_by")
+
+    class Meta:
+        model = Notification
+        fields = "__all__"
+