Added viewsets for shelves

backend/apps/shelves/views.py

@@ -1,3 +1,9 @@
 from django.shortcuts import render
 
-# Create your views here.
+from apps.shelves.models import Shelf
+from apps.shelves.serializers import ShelfSerializer
+from rest_framework import viewsets 
+
+class ShelvesViewSet(viewsets.ModelViewSet):
+    queryset = Shelf.objects.select_related("user")
+    serializer_class = ShelfSerializer