Make new api snake case. https://github.com/Koenkk/zigbee2mqtt/issues/3281

lib/util/utils.js

@@ -172,11 +172,24 @@ function* getExternalConvertersDefinitions(settings) {
     }
 }
 
+function toSnakeCase(value) {
+    if (typeof value === 'object') {
+        for (const key of Object.keys(value)) {
+            value[toSnakeCase(key)] = value[key];
+            delete value[key];
+        }
+        return value;
+    } else {
+        return value.replace(/\.?([A-Z])/g, (x, y) => '_' + y.toLowerCase()).replace(/^_/, '').replace('_i_d', '_ID');
+    }
+}
+
 module.exports = {
     millisecondsToSeconds: (milliseconds) => milliseconds / 1000,
     secondsToMilliseconds: (seconds) => seconds * 1000,
     getZigbee2mqttVersion,
     objectHasProperties,
+    toSnakeCase,
     getObjectsProperty,
     getEndpointNames: () => endpointNames,
     isXiaomiDevice: (device) => {