feat: python warnings

Author: loks0n

templates/python/package/client.py.twig

@@ -91,6 +91,11 @@ class Client:
 
             response.raise_for_status()
 
+            warnings = response.headers.get('x-{{ spec.title | lower }}-warning')
+            if warnings:
+                for warning in warnings.split(';'):
+                    print(f'Warning: {warning}')
+
             content_type = response.headers['Content-Type']
 
             if response_type == 'location':