thermosphere: copy paste lots of gdb luma files (but don't build them yet)

thermosphere/src/gdb/hio.h

@@ -0,0 +1,16 @@
+/*
+*   This file is part of Luma3DS.
+*   Copyright (C) 2016-2019 Aurora Wright, TuxSH
+*
+*   SPDX-License-Identifier: (MIT OR GPL-2.0-or-later)
+*/
+
+#pragma once
+
+#include "gdb.h"
+
+bool GDB_FetchPackedHioRequest(GDBContext *ctx, u32 addr);
+bool GDB_IsHioInProgress(GDBContext *ctx);
+int GDB_SendCurrentHioRequest(GDBContext *ctx);
+
+GDB_DECLARE_HANDLER(HioReply);