Added exit code 1 when cmd line not parsed correctly

[pamidur]

The problem

My CI build is executed like this

./codacy -c $HASH -t $TOKEN -r $coverage_file -e opencover

and I forgot to set the $TOKEN, the result however is successful

Codacy.CSharpCoverage 1.0.0
Copyright (C) 2019 Codacy.CSharpCoverage

ERROR(S):
  Option 't, token' has no value.
  Required option 't, token' is missing.

> echo $?
0

The solution

Make the app return status code 1 when there were command line parsing errors

[ljmf00]

Hey @pamidur ,

Thank you for your great contribution! The patch seems good to go.

Cheers,
Luis