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_web/controllers/sources/source_controller.ex

@@ -46,7 +46,7 @@ defmodule PinchflatWeb.Sources.SourceController do
   def show(conn, %{"id" => id}) do
     source = Repo.preload(Sources.get_source!(id), :media_profile)
 
-    pending_tasks = Repo.preload(Tasks.list_pending_tasks_for(:source_id, source.id), :job)
+    pending_tasks = Repo.preload(Tasks.list_pending_tasks_for(source), :job)
     pending_media = Media.list_pending_media_items_for(source, limit: 100)
     downloaded_media = Media.list_downloaded_media_items_for(source, limit: 100)