add orders app and add new model on products

core/apps/orders/urls.py

@@ -0,0 +1,11 @@
+from django.urls import path, include
+
+from core.apps.orders.views import order as order_views
+
+urlpatterns = [
+    path('order_application/', include(
+        [
+            path('create/', order_views.OrderApplicationCreateApiView.as_view()),
+        ]
+    )),
+]