Fix: #210 - Download UI Box being removed when file is still processing (#219)

* Fix: https://github.com/bbilly1/tubearchivist/issues/210 - Download UI element is removed when the file has finished downloading, but is still being moved on disk to the storage destination. This means the user is presented with nothing in the UI yet the file is still being processed.

* FIX: Resolving linting issue

* FIX: Set moving message to never expire and then a second message after the move with a 4 second expiry timer.

Co-authored-by: Rob Ainsworth <roba@immjsystems.com>

tubearchivist/home/src/download/yt_dlp_handler.py

@@ -181,7 +181,22 @@ class VideoDownloader:
                 youtube_id, video_overwrites=self.video_overwrites
             )
             self.channels.add(vid_dict["channel"]["channel_id"])
+            mess_dict = {
+                "status": "message:download",
+                "level": "info",
+                "title": "Moving....",
+                "message": "Moving downloaded file to storage folder",
+            }
+            RedisArchivist().set_message("message:download", mess_dict, False)
+
             self.move_to_archive(vid_dict)
+            mess_dict = {
+                "status": "message:download",
+                "level": "info",
+                "title": "Completed",
+                "message": "",
+            }
+            RedisArchivist().set_message("message:download", mess_dict, 4)
             self._delete_from_pending(youtube_id)
 
         # post processing