Add armin/editorconfig-cli

[a-r-m-i-n]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe

It would be nice to also have an automated check for given .editorconfig declarations.
Editors like PhpStorm respect the declarations for new files and lines in existing files, but do not check for "invalid" declarations.

Describe the solution you'd like

Three years ago, I've written and published a free CLI tool to achieve that:
https://packagist.org/packages/armin/editorconfig-cli

It would make me proud to support the development of the core (and extensions), this way 😃

Describe alternatives you've considered

No response

Additional context

No response

[bmack]

@a-r-m-i-n great work. we'd be happy to integrate your work. Would you like to create a PR or should I?