Allow subtitle downloading (#11)

* Added subtitle options to media profile model

* Updated media profile form

* Adds subtitle-based options in options builder

* Updates metadata parser to include subtitles

* Adds subtitle_filepaths to media_item

* renamed video_filepath to media_filepath

* Added more fields to media profile show page

test/pinchflat/workers/media_indexing_worker_test.exs

@@ -50,7 +50,7 @@ defmodule Pinchflat.Workers.MediaIndexingWorkerTest do
       expect(YtDlpRunnerMock, :run, fn _url, _opts, _ot -> {:ok, "video1"} end)
 
       channel = channel_fixture(index_frequency_minutes: 10)
-      media_item_fixture(%{channel_id: channel.id, video_filepath: nil})
+      media_item_fixture(%{channel_id: channel.id, media_filepath: nil})
       perform_job(MediaIndexingWorker, %{id: channel.id})
 
       assert [_, _] = all_enqueued(worker: VideoDownloadWorker)