Fix issues reported by PHPCS

Working on it.

I have made the required changes to remove all PHP_CodeSniffer errors,
Please review.

I still see some issues when running the PHPUnit tests, could you check, please @divyansh.gupta ? https://git.drupalcode.org/issue/google_calendar_service-3495691/-/jobs/...

Yes @danrod working on it.

divyansh.gupta → changed the visibility of the branch 3.0.x to hidden.

divyansh.gupta → changed the visibility of the branch 3495691-fix-issues-reported to hidden.

Hello @danrod,
Resolved the phpunit please review.

Thanks @divyansh.gupta for fixing the PHPCS warnings, I still see some CSPELL and PHPSTAN issues, would you be able to check these? if not I can look on these today.

danrod → closed merge request !17

I fixed all the issues and all the tests passed OK this time, I'll test this in Drupal 10 and then I'll merge it to the 3.0.x branch: https://git.drupalcode.org/project/google_calendar_service/-/pipelines/3...

Tested on D10 with no issues, I'll mark this as "Fixed", I'll make a new release shortly, thanks @divyansh.gupta for your help !