feat: use php code sniffer

[rishtigupta]

PR Description:

What does this commit do?

1. We enrolled in listing momento to drupal index org. (https://www.drupal.org/project/projectapplications/issues/3427212#comment-15486454).

They use a code sniffer that points out linting issues/doc comments and any other code spells. This commit updates the files based on running the PHPCS code sniffer.

Installation Instructions:

• Used Drupal server (Amazon EC2 instance) to run the drupal demo website
• Update the server's composer.json to use feat/phpcs branch
• Install phpcs code sniffer (https://github.com/PHPCSStandards/PHP_CodeSniffer/)
• Install drupal/coder (https://www.drupal.org/docs/contributed-modules/code-review-module/installing-coder)
• Run phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml web/modules/contrib/drupal-cache/ to detect errors + warnings
• Run phpcbf --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml web/modules/contrib/drupal-cache/ to fix most of the errors. Some had to be done manually which the phpcbf could not.
• Copy the correct file from ec2 instance to local machine and replaced the existing code with the updated code.

2. Uncomments the phpcs extension on push/pull request to main

[pgautier404]

:ty: