Simplify logging

To avoid having to pass around a `Subject`

src/musicplayer.gleam

@@ -8,15 +8,14 @@ import musicplayer/musicplayer
 import musicplayer/ui/ui
 
 pub fn main() -> Nil {
-  let assert Ok(logger) = logging.new("/tmp/musicplayer.log")
+  let assert Ok(_) = logging.initialize()
 
   let input_keys_name: Name(Key) = process.new_name("input_keys")
   input.new(input_keys_name)
 
-  let assert Ok(ui) = ui.new(logger)
+  let assert Ok(ui) = ui.new()
   let assert Ok(mpv) = mpv.new()
-  let assert Ok(musicplayer_pid) =
-    musicplayer.new(logger, ui, mpv, input_keys_name)
+  let assert Ok(musicplayer_pid) = musicplayer.new(ui, mpv, input_keys_name)
 
   let monitor = process.monitor(musicplayer_pid)
   process.new_selector()