acc, set, applet_oe: stub various functions, add set service (#105)

* Stubs for various acc:u0 funcs needed

* Stub for GetDesiredLanguage in IApplicationFunctions

* Add set service + stubs needed for games

* Fix formatting

* Implement IProfile, IManagerForApplication, return bool in CheckAvailability, style fixes

* Remove IProfile::Get(needs more research), fix IPC response sizes

src/core/hle/service/set/set.h

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Service {
+namespace Set {
+
+class SET final : public ServiceFramework<SET> {
+public:
+    explicit SET(const char* name);
+    ~SET() = default;
+
+private:
+    void GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx);
+};
+
+/// Registers all Set services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& service_manager);
+
+} // namespace Set
+} // namespace Service