Add system time configuration (#4043)

* Add setting to switch between a fixed start time and the system time

Add clock settings to SDL

Make clock configureable in qt

Add a SharedPage handler class

Init shared_page_handler for tests

src/core/hle/service/gsp/gsp_gpu.cpp

@@ -13,7 +13,6 @@
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/result.h"
 #include "core/hle/service/gsp/gsp_gpu.h"
-#include "core/hle/shared_page.h"
 #include "core/hw/gpu.h"
 #include "core/hw/hw.h"
 #include "core/hw/lcd.h"
@@ -732,7 +731,8 @@ void GSP_GPU::SetLedForceOff(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp(ctx, 0x1C, 1, 0);
 
     u8 state = rp.Pop<u8>();
-    SharedPage::Set3DLed(state);
+
+    Core::System::GetInstance().GetSharedPageHandler()->Set3DLed(state);
 
     IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
     rb.Push(RESULT_SUCCESS);