Refactor code structure and remove redundant changes

django-backend/reviews/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

django-backend/reviews/apps.py

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+from django.apps import AppConfig
+
+
+class ReviewsConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "reviews"

django-backend/reviews/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

django-backend/reviews/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

django-backend/reviews/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.