refactor: restore infinite loop at the end of main function

Restored the 'select {}' statement at the end of the main function for an infinite loop.

src/main.go

@@ -88,4 +88,6 @@ func main() {
 		log.Info("If it works, you should see a lot of \"Error pinging host\" messages.")
 		log.Info("Because the program blocks the servers, it will not be able to connect to them.")
 	}
+
+	select {}
 }