SPEC-7531 Change Code/CryEngine to Code/Legacy (#1634)

* git mv Code\CryEngine Code\Legacy
* redirecting CMakeLists.txt
* fixing uic warning
* Some more CryEngine mentions
* validation scripts

Signed-off-by: Esteban Papp <81431996+amznestebanpapp@users.noreply.github.com>

Code/Legacy/CryCommon/CryThreadImpl.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) Contributors to the Open 3D Engine Project
+ * 
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ *
+ */
+
+
+#pragma once
+
+
+#include <CryThread.h>
+
+// Include architecture specific code.
+#if defined(LINUX) || defined(APPLE)
+#include <CryThreadImpl_pthreads.h>
+#define AZ_RESTRICTED_SECTION_IMPLEMENTED
+#elif defined(WIN32) || defined(WIN64)
+#include <CryThreadImpl_windows.h>
+#define AZ_RESTRICTED_SECTION_IMPLEMENTED
+#elif defined(AZ_RESTRICTED_PLATFORM)
+    #include AZ_RESTRICTED_FILE(CryThreadImpl_h)
+#endif
+#if defined(AZ_RESTRICTED_SECTION_IMPLEMENTED)
+#undef AZ_RESTRICTED_SECTION_IMPLEMENTED
+#else
+// Put other platform specific includes here!
+#endif