example: add audio_sound_loading

build.zig

@@ -207,6 +207,11 @@ pub fn build(b: *std.Build) !void {
             .path = "examples/audio/music_stream.zig",
             .desc = "Use music stream to play an audio file",
         },
+        .{
+            .name = "sound_loading",
+            .path = "examples/audio/sound_loading.zig",
+            .desc = "Load and play a song",
+        },
         .{
             .name = "basic_screen_manager",
             .path = "examples/core/basic_screen_manager.zig",