upd: update usage hint in vm and compiler

src/vm/main.c

@@ -17,6 +17,7 @@ void print_hint()
   printf("Usage: fz [flags] <file path>\n");
   printf("Flags:\n");
   printf("\t-h\t--help\tprint usage information\n");
+  printf("\t-d\t--debug\tdisplay program opcodes\n");
 }
 
 // Parse passed arguments and build args setup structure