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.

location/forms.py

@@ -13,28 +13,30 @@ from .models import Location
 # NOTE: All classes below are DEPRECATED
 # Use domain-specific location forms instead
 
+
 class LocationForm(forms.ModelForm):
     """DEPRECATED: Use domain-specific location forms instead"""
-    
+
     class Meta:
         model = Location
         fields = [
-            'name',
-            'location_type', 
-            'latitude',
-            'longitude',
-            'street_address',
-            'city',
-            'state',
-            'country',
-            'postal_code',
+            "name",
+            "location_type",
+            "latitude",
+            "longitude",
+            "street_address",
+            "city",
+            "state",
+            "country",
+            "postal_code",
         ]
 
+
 class LocationSearchForm(forms.Form):
     """DEPRECATED: Location search functionality has been moved to parks app"""
-    
+
     query = forms.CharField(
         max_length=255,
         required=True,
-        help_text="This form is deprecated. Use location search in the parks app."
+        help_text="This form is deprecated. Use location search in the parks app.",
     )