test msdn-magazine suggestion

[iricigor]

https://docs.microsoft.com/en-us/archive/msdn-magazine/2019/march/net-parse-the-command-line-with-system-commandline

https://github.com/dotnet/command-line-api

[iricigor]

done in 1179c4c

[iricigor]

Pictures and comments
Wrong exit code

Missing --help in list of options

Missing default values for optional parameters

Not visible that it is optional

This one is OK

[iricigor]

Summary:

• the issues
  • missing positional values, one must write argument names
  • wrong exit code
• other issues:
  • not clear what are optional and what required arguments