Begin midi engine

src/midi/midi.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+struct MidiEngine;
+
+struct MidiDeviceInfo {
+    char    name[64];
+    int32_t id;
+    bool    is_input;
+};
+
+MidiEngine     *midi_create();
+void            midi_destroy(MidiEngine *engine);
+void            midi_refresh_devices(MidiEngine *engine);
+int32_t         midi_get_device_count(MidiEngine *engine);
+MidiDeviceInfo *midi_get_device(MidiEngine *engine, int32_t index);