Aggiunto nodo debounce

package.json

@@ -13,7 +13,8 @@
     "keywords": [ "node-red", "xmpp" ],
     "node-red"      : {
         "nodes"     : {
-            "xmpp": "92-xmpp.js"
+            "xmpp": "92-xmpp.js",
+            "my-debounce": "my-debounce.js"
         }
     },
     "author": {