Add device: Xiaomi - Mi motion sensor (#4031)

Author: github-actions[bot]

library/library.json

@@ -10973,6 +10973,12 @@
             "manufacturer": "ZVIDAR",
             "model": "Z-CM-V01",
             "battery_type": "Rechargeable"
+        },
+        {
+            "manufacturer": "Xiaomi",
+            "model": "Mi motion sensor",
+            "model_id": "RTCGQ01LM",
+            "battery_type": "CR2450"
         }
     ]
 }