Resolve "Alt text review view"

Updated MR

Created a custom module that installs the config for the View on install.

As per the requests/amendments:

• the view is displayed as a Page on the url /admin/content/media/alt-text-review
• the permissions are set so that only people who can edit all media can see this
• in the table we have
  • last updated date
  • the edit and usage buttons in a dropdown (let me know if you think that it'd be better to have them as two separate buttons)
• the table is sortable by
  • Image Title
  • Updated date
  • Alt text

Closes #89