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

mix.exs

@@ -13,6 +13,16 @@ defmodule Pinchflat.MixProject do
       preferred_cli_env: [
         check: :test,
         credo: :test
+      ],
+      test_coverage: [
+        ignore_modules: [
+          Pinchflat.HTTP.HTTPClient,
+          PinchflatWeb.Layouts,
+          Pinchflat.DataCase,
+          Pinchflat.Release,
+          ~r/Fixtures/,
+          ~r/HTML$/
+        ]
       ]
     ]
   end