Feature request: ignore node_modules and other theme-related directories

[joshuaboltzmc]

How is drupal-check installed?
drupal-check is installed as a dependency to my project

Environment:

• macOS host/Linux via DrupalVM
• PHP Version: 7.3
• Drupal core: 8.9.0

Describe the bug
The Drupal check tool can be used to check deprecated code in themes too, but themes typically have extra tooling in place like NPM packages in node_modules and bower_components. I can't think of a reason why we would want Drupal-check to scan these types of directories.

There is the -e flag that can be used to exclude these, but it may be better to not force people to need to do this manually.