fix: help hint and --h/-h flags

src/vm/main.c

@@ -15,7 +15,7 @@ void print_hint()
 {
   printf("Usage: fz [flags] <file path>\n");
   printf("Flags:\n");
-  printf("\tno flags available yet :(\n");
+  printf("\t-h\t--help\tprint usage information\n");
 }
 
 // Parse passed arguments and build args setup structure
@@ -65,8 +65,11 @@ int main(int argc, char **argv)
 {
   run_args_t *args = parse_args(argc, argv);
   if (!args)
-  {
     return -1;
+  else if (args->help)
+  {
+    print_hint();
+    return 0;
   }
 
   fzl_vm_t *vm = fzl_mkvm(args->filepath);