Device: Ecowitt - WH51 (#3901)

Co-authored-by: JuHu42 <[email protected]>

Author: github-actions[bot]

library/library.json

@@ -10717,6 +10717,11 @@
             "manufacturer": "ZVIDAR",
             "model": "Z-CM-V01",
             "battery_type": "Rechargeable"
+        },
+        {
+            "manufacturer": "Ecowitt",
+            "model": "WH51",
+            "battery_type": "AA"
         }
     ]
 }