Implement CheckNew3DS and CheckNew3DSApp

Append an item[is_new3ds] to config file[System] group

Implement APT::SetNSStateField,it will update the unknown NS_state_field

src/core/settings.h

@@ -40,6 +40,9 @@ static const std::array<Values, NUM_INPUTS> All = {{
 
 
 struct Values {
+    // CheckNew3DS
+    bool is_new3ds;
+
     // Controls
     std::array<int, NativeInput::NUM_INPUTS> input_mappings;