feat: simple failed request handling (#474)

When a movie or series is added with radarr or sonarr, if it fails, this changes the media state to
unknown and sends a notification to admins. Client side this will look like a failed state along
with a retry button that will delete the request and re-queue it.

src/i18n/globalMessages.ts

@@ -6,6 +6,7 @@ const globalMessages = defineMessages({
   processing: 'Processing',
   unavailable: 'Unavailable',
   requested: 'Requested',
+  failed: 'Failed',
   pending: 'Pending',
   declined: 'Declined',
   approved: 'Approved',
@@ -15,6 +16,7 @@ const globalMessages = defineMessages({
   approve: 'Approve',
   decline: 'Decline',
   delete: 'Delete',
+  retry: 'Retry',
   deleting: 'Deleting…',
   close: 'Close',
 });