Adopt friendsoftwig/twigcs for Twig coding standards

Twig Coding Standard (twig-cs-fixer) found 120 errors, check attachment.

The Needs Review Queue Bot → tested this issue. It no longer applies to Drupal core. Therefore, this issue status is now "Needs work".

This does not mean that the patch needs to be re-rolled or the MR rebased. Read the Issue Summary, the issue tags and the latest discussion here to determine what needs to be done.

Consult the Drupal Contributor Guide → to find step-by-step guides for working with issues.

The Needs Review Queue Bot → tested this issue. It no longer applies to Drupal core. Therefore, this issue status is now "Needs work".

This does not mean that the patch needs to be re-rolled or the MR rebased. Read the Issue Summary, the issue tags and the latest discussion here to determine what needs to be done.

Consult the Drupal Contributor Guide → to find step-by-step guides for working with issues.

MR !5248 adds vincentlanglet/twig-cs-fixer instead of friendsoftwig/twigcs about which is this issue.

That being said, friendsoftwig/twigcs maintainer is looking for someone to take over the maintainership and considers putting the project in the EOL status if no one will step up.
https://github.com/friendsoftwig/twigcs/issues/304

One alternative they point to is vincentlanglet/twig-cs-fixer (which MR !5248 adds).
Personally, I also prefer vincentlanglet/twig-cs-fixer since it also includes automatic fixes. We already using it for some time at work in Drupal based projects, and it works great.

Looks like `friendsoftwig/twigcs` will be EOL soon and `vincentlanglet/twig-cs-fixer` is a promising replacement.

Should we change the title and description to be more generic?