Added file logging

logs.js

@@ -0,0 +1,18 @@
+const fs = require("fs");
+const path = require("path");
+const shared = require("./shared.js");
+let logFile;
+
+  logFile = path.join("/var/log", "NetBird-UptimeKuma.log");
+console.log(`[${shared.now}] File di log situato in /var/log/NetBird-UptimeKuma.log`);
+  
+function writeToLog(message) {
+  fs.appendFileSync(logFile, `${message}\n`);
+}
+
+function Log(message) {
+  console.log(message);
+  writeToLog(message);
+}
+
+module.exports = { Log };