Make 'test_menu' for testers

[quietash9704]

Hello, I want to test your codes, so I make 'menu.cpp'. This read text file that user write, and change style, color, background color to what the user wants.

But, I find the bug from test. Please show the url. https://imgur.com/a/dmvdfT3

When I print the result, I see that problem. I will write this problem on your issue, so check that and give me some comments. Thank you.