feat(sound): added a simple sound player to the engine with api in the App struct and a component to store metadata

crates/comet_sound/src/audio.rs

@@ -0,0 +1,13 @@
+pub trait Audio {
+    fn new() -> Self
+    where
+        Self: Sized;
+    fn load(&mut self, name: &str, path: &str);
+    fn play(&mut self, name: &str, looped: bool);
+    fn pause(&mut self, name: &str);
+    fn stop(&mut self, name: &str);
+    fn stop_all(&mut self);
+    fn update(&mut self, dt: f32);
+    fn is_playing(&self, name: &str) -> bool;
+    fn set_volume(&mut self, name: &str, volume: f32);
+}