feat (loonas_curtain): add Emteco curtain motor

Issue #4403

custom_components/tuya_local/devices/loonas_curtain.yaml

@@ -14,6 +14,8 @@ products:
     name: Curtain motor
   - id: xmqkagf5dimcpygi
     manufacturer: Nordice
+  - id: iznuapjmqurazh7m
+    manufacturer: Emteco
 entities:
   - entity: cover
     class: curtain