implement resume message

src/core/hle/service/am/am.cpp

@@ -636,6 +636,10 @@ void AppletMessageQueue::RequestExit() {
     PushMessage(AppletMessage::Exit);
 }
 
+void AppletMessageQueue::RequestResume() {
+    PushMessage(AppletMessage::Resume);
+}
+
 void AppletMessageQueue::FocusStateChanged() {
     PushMessage(AppletMessage::FocusStateChanged);
 }

src/core/hle/service/am/am.h

@@ -90,6 +90,7 @@ public:
     AppletMessage PopMessage();
     std::size_t GetMessageCount() const;
     void RequestExit();
+    void RequestResume();
     void FocusStateChanged();
     void OperationModeChanged();