added bsaic viewset classes

companies/views.py

@@ -1,3 +1,11 @@
 from django.shortcuts import render
 
 # Create your views here.
+from rest_framework import viewsets
+from companies.models import Company
+from companies.serializers import CompanySerializer
+
+
+class CompanyViewSet(viewsets.ModelViewSet):
+      queryset = Company.objects.all()
+      serializer_class = CompanySerializer