Move all firmware files to subdirectory

firmware/components/sound/sound.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) Camden Dixie O'Brien
+ */
+
+#ifndef SOUND_H
+#define SOUND_H
+
+/**
+ * Initialize the sound subsystem.
+ */
+void sound_init(void);
+
+/**
+ * Turn the alert sound on.
+ */
+void sound_alert_on(void);
+
+/**
+ * Turn the alert sound off.
+ */
+void sound_alert_off(void);
+
+#endif