Fix cspell, eslint, phpcs, phpstan, stylelint

Some examples:

• https://www.drupal.org/project/commerce/issues/3405463 📌 Enable PHPStan Fixed
• https://www.drupal.org/project/simple_address/issues/3436598 📌 Setup GitLab CI pipelines for phpcs, phpstan, eslint, composer validations Fixed

Mostly its creating files to list what to ignore and therefore is low priority.

While phpcs numbers may gradually go down: a total of 275 errors and 69 warnings were found in 30 files
(adding a dot, a comma, removing a space...)