adds openapi definitions to backend

backend/playlist/urls.py

@@ -2,10 +2,13 @@ from django.urls import path
 from . import views
 from django.conf import settings
 from django.conf.urls.static import static
+from drf_spectacular.views import SpectacularAPIView, SpectacularSwaggerView
 
 urlpatterns = [
     ### API
     path('api/', views.api_root, name="api-root"),
+    path('api/schema/', SpectacularAPIView.as_view(), name='schema'),
+    path('api/schema/swagger-ui/', SpectacularSwaggerView.as_view(url_name='schema'), name='swagger-ui'),
     path('api/track/', views.TrackListView.as_view(), name="api-tracks"),
     path('api/track/<id>', views.TrackDetailView.as_view(), name="api-track"),
     path('api/artist/<id>', views.ArtistDetailView.as_view(), name="api-artist"),