Use dependency injection in the projects

I am checking this issue

I have a created a patch, review once with it.
Affected files:
Sms.php
UserSettingsForm.php

Created MR #10, Please review.

Reviewed the PR #06 working fine on drupal.
Drupal 10.0.9
PHP 8.1.16

@nishant, can you remove the unused class from UserSettingsForm.php file.

Also, add the Class Constructor description in the file.

  /**
   * Class Constructor.
   *
   */

Will do

Created Patch. Please review.