airx h8: update products section to new format

Split manufacturer and model, ready to use in device info in future.

custom_components/tuya_local/devices/airx_h8_humidifier.yaml

@@ -1,7 +1,8 @@
 name: Humidifier
 products:
   - id: orypuo7ksduqze3x
-    name: airx纯净加湿器H8Pro
+    manufacturer: airx
+    model: H8Pro
 entities:
   - entity: humidifier
     class: humidifier