Initial commit: Ignis Client Python

- Sync and async HTTP clients for Ignis Core WiZ server
- 23 endpoints: auth, devices, groups, control, schedules, stats, API keys
- Pydantic models with client-side validation
- 108 unit tests
- README with role table and usage examples

requirements.txt

@@ -0,0 +1,2 @@
+httpx>=0.26
+pydantic>=2.5