adding dowload functionality

src/app/module/components/pro-view/pro-view.component.ts

@@ -216,7 +216,7 @@ export class ProViewComponent {
   }
 
   downloadCSV4() {
-    // Use the first timestamp in each array of sensorDataArray as the timestamp for each row
+    // Use the first timestamp in each array of sensorDataArray as the timestamp for each rowss
     let csvData:any[]=[[]]
     csvData.push()
     const timestamps = this.sensorDataArray.at(1)?.map(data => data.timestamp?? '')??[];