fgo: fgohook finally added

Credits:
- Coburn
- domeori
- Mitsuhide
- OLEG
- rakisaionji

fgohook/deck.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <windows.h>
+
+#include <stdbool.h>
+
+struct deck_config {
+    bool enable;
+};
+
+HRESULT deck_hook_init(const struct deck_config *cfg, int port);