[idd] project: organize driver sources by responsibility

Group the IDD sources and Visual Studio filters by subsystem.

Split the device and swap-chain implementations into focused units,
rename the context classes, and reduce header coupling.

idd/LGIdd/platform/CPlatformInfo.h

@@ -0,0 +1,51 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#pragma once
+
+#include <string>
+
+class CPlatformInfo
+{
+private:
+  static size_t      m_pageSize;
+  static std::string m_productName;
+  static uint8_t     m_uuid[16];
+
+  static std::string m_model;
+  static int m_cores;
+  static int m_procs;
+  static int m_sockets;
+
+  static void InitUUID();
+  static void InitCPUInfo();
+
+public:
+  static void Init();
+
+  inline static size_t GetPageSize() { return m_pageSize; }
+  inline static const std::string& GetProductName() { return m_productName; }
+  inline static const uint8_t* GetUUID() { return m_uuid; }
+
+  inline static const std::string & GetCPUModel() { return m_model; }
+  inline static int GetCoreCount() { return m_cores; }
+  inline static int GetProcCount() { return m_procs; }
+  inline static int GetSocketCount() { return m_sockets; }
+};