Add integration with Purge module to purge cache of file path after replacement

Added a patch that will invalidate the cache tags for the replaced file thus invoking drupal to purge the required files cache and the cache url for the file.

Since the merge issue module has been closed as working as designed and they are pushing it to a particular purger instead, can we review my patch and see if we can get that merged in?

Let's make a merge request out of this and an automated test!

Realised I should have rebased the opened (empty) MR before applying the patch. Everything should be in order now.

I encountered this error with the patch:

TypeError: media_entity_file_replace_file_update(): Argument #1 ($entity) must be of type EntityInterface, Drupal\file\Entity\File given in media_entity_file_replace_file_update() (line 203 of modules/contrib/media_entity_file_replace/media_entity_file_replace.module).

It occurs when 'Overwrite original file (.pdf)' is checked."