Update device: Efergy_e2CT by rtl_433 (#1823)

Co-authored-by: hessel-a <[email protected]>

Author: github-actions[bot]

custom_components/battery_notes/data/library.json

@@ -5754,6 +5754,12 @@
             "manufacturer": "Zooz",
             "model": "ZSE44",
             "battery_type": "CR2450"
+        },
+        {
+            "manufacturer": "rtl_433",
+            "model": "Efergy-e2CT",
+            "battery_type": "AAA",
+            "battery_quantity": 3
         }
     ]
 }