acc: Stub LoadOpenContext

This is used in multiple games such as:
- Clubhouse Games: 51 Worldwide Classics
- Grandia HD Collection
- XCOM 2 Collection
- Baldur's Gate 1/2
- Dr Kawashima's Brain Training
- Super Mario 3D All-Stars

src/core/hle/service/acc/acc.cpp

@@ -774,6 +774,17 @@ void Module::Interface::ListQualifiedUsers(Kernel::HLERequestContext& ctx) {
     rb.Push(RESULT_SUCCESS);
 }
 
+void Module::Interface::LoadOpenContext(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+
+    // This is similar to GetBaasAccountManagerForApplication
+    // This command is used concurrently with ListOpenContextStoredUsers
+    // TODO: Find the differences between this and GetBaasAccountManagerForApplication
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IManagerForApplication>(profile_manager->GetLastOpenedUser());
+}
+
 void Module::Interface::ListOpenContextStoredUsers(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_ACC, "(STUBBED) called");
 

src/core/hle/service/acc/acc.h

@@ -34,6 +34,7 @@ public:
         void IsUserAccountSwitchLocked(Kernel::HLERequestContext& ctx);
         void GetProfileEditor(Kernel::HLERequestContext& ctx);
         void ListQualifiedUsers(Kernel::HLERequestContext& ctx);
+        void LoadOpenContext(Kernel::HLERequestContext& ctx);
         void ListOpenContextStoredUsers(Kernel::HLERequestContext& ctx);
 
     private:

src/core/hle/service/acc/acc_u0.cpp

@@ -29,7 +29,7 @@ ACC_U0::ACC_U0(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> p
         {110, nullptr, "StoreSaveDataThumbnail"},
         {111, nullptr, "ClearSaveDataThumbnail"},
         {120, nullptr, "CreateGuestLoginRequest"},
-        {130, nullptr, "LoadOpenContext"}, // 5.0.0+
+        {130, &ACC_U0::LoadOpenContext, "LoadOpenContext"}, // 5.0.0+
         {131, &ACC_U0::ListOpenContextStoredUsers, "ListOpenContextStoredUsers"}, // 6.0.0+
         {140, &ACC_U0::InitializeApplicationInfoRestricted, "InitializeApplicationInfoRestricted"}, // 6.0.0+
         {141, &ACC_U0::ListQualifiedUsers, "ListQualifiedUsers"}, // 6.0.0+