Use a modern CLI parser

[petrsvihlik]

Motivation

The currently used CLI parser package is no longer maintained. We need to replace it with something new.

Proposed solution

Use either:

• https://github.com/dotnet/command-line-api (ideally)
• or https://github.com/commandlineparser/commandline

Additional context

Similarly to the CommandLineOptionsProvider, it'd be great to have the new parser implemented as ConfigurationProvider, IConfigurationSource.

[petrsvihlik]

fixed by #95