Add drush command to clear the locale status

[rolfvandekrol]

Updating modules does not automatically clear the locale status. This causes problems in our automatic deployments, because that means the locale:update command will sometimes try to use .po files for older versions of modules.

We use drupal-composer/drupal-l10n to include the correct .po files in our build and don't allow downloading the .po files inside the production container.

When we clear the locale status before running locale:update, it always uses the correct files.

We could potentially add this to our own scripts, but we think this is also useful for other Drush users.

[Sutharsan]

Code looks good. I understand the use case and agree that it is beneficial for others. I have objection to add this command.

[Sutharsan]

@weitzman I'm fine with adding this to 11.x.