Resolve timezone from user browser

lib/music_library_web/hooks/get_timezone.ex

@@ -0,0 +1,10 @@
+defmodule MusicLibraryWeb.Hooks.GetTimezone do
+  use MusicLibraryWeb, :live_component
+
+  def on_mount(:default, _params, _session, socket) do
+    connect_params = get_connect_params(socket)
+    timezone = connect_params["timezone"] || MusicLibrary.default_timezone()
+
+    {:cont, assign(socket, :timezone, timezone)}
+  end
+end