santize user input

[PMolnes]

It might be a good idea to look into input sanitizing, as user input is directly used in execSync function to call commands in a shell.

[PMolnes]

I did some research with how other initializers do it. When using npm create vue you can use command injection to for example list all the files in the current directory. I might skip writing much code to prevent stuff like that since the user will only be able to command inject their own system anyways.