feat: Add iidx soundbank hook

> mockup using MF decoder (which by itself is broken, it seems)
> working .s3p unpacking and .2dx packing
> use avs filesystem (read only)
> soundbank patching disabled (missing some logic)
> unity games may be broken (linker)
> related to #1

hooks/bmsbhook.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <windows.h>
+
+namespace hooks::bmsb
+{
+void init(HINSTANCE hmodule);
+void deinit(HINSTANCE hmodule);
+}