Support pushing and poping a playing CDDA track

examples/PoolBox/application/src/application.cpp

@@ -5,6 +5,7 @@
 #include "Overlay/Overlays.hpp"
 #include <FontWriter/fonts.hpp>
 #include <FontWriter/font_writer.hpp>
+#include <PSX/Audio/CDDA.hpp>
 #include <PSX/Periphery/periphery.hpp>
 #include <stdio.hpp>
 
@@ -102,6 +103,9 @@ static void setup() {
                 break;
         }
     },MenuEntries);
+
+    const auto [first_track, last_track] = CDDA::get_tracks();
+    CDDA::play(first_track);
 }
 
 namespace NormalScene {
@@ -157,8 +161,10 @@ namespace LoadingScene {
             render();
             GPU::swap_buffers_vsync(1);
 
+            CDDA::push_play();
             state_changer.asset_load();
             old_state_changer = state_changer;
+            CDDA::pop_play();
         }
 
         state_changer.main();