New Drush command for developers for extracting translations of custom module, theme or profile

Hi,

Thanks for the work on this!

Unfortunately, it wasn't fully "plug & play" on my side.
For context, I'm using Drupal core version 11.2.2 and module version 1.1.0.

I made a few small adjustments to get things working in my environment.
Here are the changes I applied:

• Added a check for $projectName before checking its status → In case it's NULL (e.g., when simply running drush pet), it would otherwise throw an error.
• Replaced FileSystemInterface::EXISTS_REPLACE with FileExists::Replace → This has been deprecated since Drupal 10.3.0.
• In my project (maybe due to my config?), the generated file for each module/theme is always named general.pot, regardless of the options passed → So I replaced:
  $translationStoredFile = $translationsDirectory . '/' . $projectKey . '-' . $languageCode . '.po'; with $translationStoredFile = 'general.pot';
• Removed the create() method in favor of proper dependency injection.
• Few optional improvements, such as adding type hint to constant and marking properties as readonly.

Since I'm not sure whether these changes are compatible for everyone, I didn't commit them to the MR — but I'm attaching the patch I used.