[HID] Enable Keyboard Passthru

Thanks Adrian for figuring out missing XINPUT_KEYSTROKE_VALIDUNICODE flag.
Thanks Clippy95 for figuring out shift and capslock

src/xenia/hid/winkey/winkey_input_driver.h

@@ -72,7 +72,7 @@ class WinKeyInputDriver final : public InputDriver {
   xe::global_critical_region global_critical_region_;
   std::queue<KeyEvent> key_events_;
   std::vector<KeyBinding> key_bindings_;
-
+  uint8_t key_map_[256];
   uint32_t packet_number_ = 1;
 };