Don't pattern match output of OptionParser

[nappex]

Don't pattern match output of OptionParser instead use Keyword.get to obtain value for specific switch or information about using a particular switch on cli.

see:
keyword ordering official docs
https://blog.appsignal.com/2022/08/09/write-a-standalone-cli-application-in-elixir.html

[Glutexo]

Maybe don’t use it too much, not not use it at all.