Added controller hotkeys cvar (#119)

* Added controller hotkeys setting

Added option to disable controller hotkeys
Minor Changes

* Fixed locked input system

The input system lock should be released even if a controller is not connected.

src/xenia/app/emulator_window.h

@@ -208,6 +208,7 @@ class EmulatorWindow {
   void GamepadHotKeys();
   void ToggleGPUSetting(gpu_cvar index);
   bool IsUseNexusForGameBarEnabled();
+  std::string BoolToString(bool value);
   void DisplayHotKeysConfig();
 
   xe::X_STATUS RunTitle(std::filesystem::path path);