Add integration_type hub to ekeybionyx (home-assistant#158941)

Author: joostlek

homeassistant/components/ekeybionyx/manifest.json

@@ -5,6 +5,7 @@
   "config_flow": true,
   "dependencies": ["application_credentials", "http"],
   "documentation": "https://www.home-assistant.io/integrations/ekeybionyx",
+  "integration_type": "hub",
   "iot_class": "local_push",
   "quality_scale": "bronze",
   "requirements": ["ekey-bionyxpy==1.0.0"]