[Enhancement] Track the predicted final filepath for indexed media items (#461)

* Added ability to pass additional yt-dlp options to indexing step

* Added predicted_filename to media struct

* WIP added ability to predict filepath to source indexing

* renamed predicted_filepath

* Added the ability to predict filepath when fast indexing

* Add predicted_media_filepath to media items table

* Addressed TODOs

priv/repo/migrations/20241107201850_add_predicted_media_filepath_to_media_items.exs

@@ -0,0 +1,9 @@
+defmodule Pinchflat.Repo.Migrations.AddPredictedMediaFilepathToMediaItems do
+  use Ecto.Migration
+
+  def change do
+    alter table(:media_items) do
+      add :predicted_media_filepath, :string
+    end
+  end
+end