HLE/FS: Implemented FS::GetProgramLaunchInfo.

This function is used by the DLP system module during the DLPSRVR initialization.

src/core/hle/kernel/thread.cpp

@@ -516,6 +516,7 @@ void ThreadingShutdown() {
     }
     thread_list.clear();
     ready_queue.clear();
+    ClearProcessList();
 }
 
 const std::vector<SharedPtr<Thread>>& GetThreadList() {