LIl-211. Add online api doc urls & api router

api/v1/urls.py

@@ -0,0 +1,29 @@
+from django.urls import path, include
+
+from rest_framework import permissions
+from rest_framework.routers import DefaultRouter
+
+from drf_yasg.views import get_schema_view
+from drf_yasg import openapi
+
+
+router = DefaultRouter()
+
+
+schema_view = get_schema_view(
+   openapi.Info(
+      title="Lil Sity API",
+      default_version='v1',
+      description="Routes of Lil City project",
+   ),
+   validators=['flex', 'ssv'],
+   public=False,
+   permission_classes=(permissions.AllowAny,),
+)
+
+urlpatterns = [
+   path('swagger(<str:format>.json|.yaml)', schema_view.without_ui(cache_timeout=None), name='schema-json'),
+   path('swagger/', schema_view.with_ui('swagger', cache_timeout=None), name='schema-swagger-ui'),
+   path('redoc/', schema_view.with_ui('redoc', cache_timeout=None), name='schema-redoc'),
+   path('', include((router.urls, 'api-root')), name='api-root')
+]