Misc refactors 2024-03-14 (#89)

* Adds method to improve cleanup of empty directories

* resolved bug where source metadata worker could call itself in an infinite loop

* Refactored file deletion for media items

* Removed useless filesystem data worker

* Updated task listing fns to take a record directly

* Refactored the way I call workers

* Improved some tests

lib/pinchflat/downloading/media_downloader.ex

@@ -38,6 +38,8 @@ defmodule Pinchflat.Downloading.MediaDownloader do
             media_downloaded_at: DateTime.utc_now(),
             nfo_filepath: determine_nfo_filepath(item_with_preloads, parsed_json),
             metadata: %{
+              # IDEA: might be worth kicking off a job for this since thumbnail fetching
+              # could fail and I want to handle that in isolation
               metadata_filepath: MetadataFileHelpers.compress_and_store_metadata_for(media_item, parsed_json),
               thumbnail_filepath: MetadataFileHelpers.download_and_store_thumbnail_for(media_item, parsed_json)
             }