Refactor test utilities and enhance ASGI settings

- Cleaned up and standardized assertions in ApiTestMixin for API response validation.
- Updated ASGI settings to use os.environ for setting the DJANGO_SETTINGS_MODULE.
- Removed unused imports and improved formatting in settings.py.
- Refactored URL patterns in urls.py for better readability and organization.
- Enhanced view functions in views.py for consistency and clarity.
- Added .flake8 configuration for linting and style enforcement.
- Introduced type stubs for django-environ to improve type checking with Pylance.

parks/management/commands/fix_migrations.py

@@ -3,26 +3,34 @@ from django.db import connection
 
 
 class Command(BaseCommand):
-    help = 'Fix migration history'
+    help = "Fix migration history"
 
     def handle(self, *args, **options):
         with connection.cursor() as cursor:
             # Drop existing historical tables
-            cursor.execute("""
+            cursor.execute(
+                """
                 DROP TABLE IF EXISTS parks_historicalpark CASCADE;
                 DROP TABLE IF EXISTS parks_historicalparkarea CASCADE;
-            """)
+            """
+            )
 
             # Delete all existing parks migrations
-            cursor.execute("""
-                DELETE FROM django_migrations 
+            cursor.execute(
+                """
+                DELETE FROM django_migrations
                 WHERE app = 'parks';
-            """)
+            """
+            )
 
             # Insert the new initial migration
-            cursor.execute("""
+            cursor.execute(
+                """
                 INSERT INTO django_migrations (app, name, applied)
                 VALUES ('parks', '0001_initial', NOW());
-            """)
+            """
+            )
 
-            self.stdout.write(self.style.SUCCESS('Successfully fixed migration history'))
+            self.stdout.write(
+                self.style.SUCCESS("Successfully fixed migration history")
+            )