[ldn] Implement IClientProcessMonitor

Thank you to Lizzie (a.k.a. one of the smartest devs in the world)

src/core/hle/service/ldn/client_process_monitor.cpp

@@ -0,0 +1,22 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/hle/service/cmif_serialization.h"
+#include "core/hle/service/ldn/ldn_results.h"
+#include "core/hle/service/ldn/client_process_monitor.h"
+
+namespace Service::LDN {
+
+IClientProcessMonitor::IClientProcessMonitor(Core::System& system_)
+    : ServiceFramework{system_, "IClientProcessMonitor"} {
+    //RegisterHandlers(functions);
+}
+
+IClientProcessMonitor::~IClientProcessMonitor() = default;
+
+Result IClientProcessMonitor::InitializeSystem2() {
+    LOG_WARNING(Service_LDN, "(STUBBED) called");
+    R_SUCCEED();
+}
+
+} // namespace Service::LDN

src/core/hle/service/ldn/client_process_monitor.h

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::LDN {
+
+class IClientProcessMonitor final
+    : public ServiceFramework<IClientProcessMonitor> {
+public:
+    explicit IClientProcessMonitor(Core::System& system_);
+    ~IClientProcessMonitor() override;
+
+private:
+    Result InitializeSystem2();
+};
+
+} // namespace Service::LDN