⚡️ limit platform dependencies, reduce binary size

src/audio_default.c.v

@@ -0,0 +1,11 @@
+module main
+
+import os
+
+fn play_wav_file() {
+	$if linux {
+		os.system('aplay -q "${paths.sound}"')
+	} $else $if macos {
+		os.system('afplay -q "${paths.sound}"')
+	}
+}

src/audio.v → src/auido_windows.c.v

@@ -5,8 +5,7 @@ import miniaudio as ma
 
 fn play_wav_file() {
 	engine := &ma.Engine{}
-	result := ma.engine_init(ma.null, engine)
-	if result != .success {
+	if ma.engine_init(ma.null, engine) != .success {
 		panic('failed to initialize audio engine.')
 	}
 	defer {
@@ -18,3 +17,4 @@ fn play_wav_file() {
 	ma.engine_play_sound(engine, paths.sound.str, ma.null)
 	time.sleep(140 * time.millisecond)
 }
+