Migrate Advoware Proxy steps from old-motia

- Added services/advoware.py: Advoware API client with Redis token caching
- Added advoware_proxy steps (GET, POST, PUT, DELETE)
- Updated pyproject.toml: added aiohttp, redis, python-dotenv
- Updated iii-config.yaml: fixed ExecModule command to use full path
- Created MIGRATION_STATUS.md: documentation of migration progress

All 4 proxy endpoints registered successfully:
- GET /advoware/proxy
- POST /advoware/proxy
- PUT /advoware/proxy
- DELETE /advoware/proxy

iii-config.yaml

@@ -80,4 +80,4 @@ modules:
       watch:
         - steps/**/*.py
       exec:
-        - uv run motia run --dir steps
+        - /opt/bin/uv run python -m motia.cli run --dir steps