Source NFO downloads (#95)

* Hooked up series directory finding to source metadata runner

* Fixed aired NFO tag for episodes

* Updated MI NFO builder to take in a filepath

* Hooked up NFO generation to the source worker

* Added NFO controls to form

* Improved the way the source metadata worker updates the source

* Consolidated NFO selection options in media profile instead of source

priv/repo/migrations/20240318161405_add_nfo_path_to_sources.exs

@@ -0,0 +1,10 @@
+defmodule Pinchflat.Repo.Migrations.AddNfoPathToSources do
+  use Ecto.Migration
+
+  def change do
+    alter table(:sources) do
+      add :nfo_filepath, :string
+      add :series_directory, :string
+    end
+  end
+end