Add initial score-based dock detection

This is early development & untested code specifically targeting the steam deck for now until further finalised

HarmonyLinkLib/src/Platform/Windows/WindowsUtilities.h

@@ -26,5 +26,11 @@ namespace HarmonyLinkLib
         std::shared_ptr<FCPUInfo> get_cpu_info() override;
     
         std::shared_ptr<FOSVerInfo> get_os_version() override;
+
+        bool get_is_external_monitor_connected() override;
+
+        bool get_mouse_keyboard_detected() override;
+
+        bool get_external_controller_detected() override;
     };
 }