Providing command-line arguments shouldn't prompt for more input

[mark-wiemer]

Is your feature request related to a problem? Please describe.
When I provide command-line arguments, I only want to solve/play one level. Do not prompt me to enter an infinite loop, as that makes it more difficult to automate usage of the project.

Describe the solution you'd like
Don't prompt for infinite loop, just return 0 if game was solved, nonzero otherwise with informative error message

Describe alternatives you've considered
Currently I have to wrap all scripts using this with "no" inputs and provide that as well, wrapped in a scanner. Lots of maintenance code when a simple fix is possible

Additional context
N/A

Acceptance criteria

• Don't prompt me to enter an infinite loop if I provide command-line arguments
• Give me a return code of 0 if nothing went wrong, nonzero otherwise