Restructure stats

Split out count by format

lib/music_library_web/controllers/stats_controller.ex

@@ -4,7 +4,10 @@ defmodule MusicLibraryWeb.StatsController do
   alias MusicLibrary.Records
 
   def index(conn, _params) do
-    records_count_by_format = Records.count_records_by_format()
+    records_count_by_format =
+      Records.count_records_by_format()
+      |> Enum.sort_by(fn {_format, count} -> count end, :desc)
+
     records_count = Enum.reduce(records_count_by_format, 0, fn {_, count}, acc -> acc + count end)
     latest_record = Records.get_latest_record!()