show date in server log messages

src/main.c

@@ -3,6 +3,7 @@
 
 #include "main.h"
 #include "server.h"
+#include "utils.h"
 #include <db.h>
 #include <stdio.h>
 
@@ -14,7 +15,7 @@ int main(int argc, char *argv[]) {
   init_db_connection();
   server_data.ls = start_server();
   /* TODO: display server port */
-  printf("Server is started!\n");
+  print_log(stdout, pl_info, "Server is started!\n");
   server_main_loop(&server_data);
   db_close_connection();
   return 0;