Implement hook_help() in image_effects.module

Getting error in the patch for D8.8

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Module not present

On applying the 3072202-2.patch file, help() is seen for Drupal version 9.5.8 and PHP 7.4. Attaching the screenshots for reference.

I have tested the 3072202-2.patch and the missing hook_help function is successfully fixed . The MR was tested on Drupal 9.5.9 and PHP 8.1. I will be adding both a before and after screenshot.

Let's have a test here - just checking that visiting the route's path, we get a 200 and that the page contains the module's name. So that we do not get regressions in the future.