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/CrySystem/XML/CMakeLists.txt

@@ -0,0 +1,19 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project
+# 
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+ly_add_target(
+    NAME CrySystem.XMLBinary STATIC
+    NAMESPACE Legacy
+    FILES_CMAKE
+        crysystem_xmlbinary_files.cmake
+    INCLUDE_DIRECTORIES
+        PUBLIC
+            .
+    BUILD_DEPENDENCIES
+        PUBLIC
+            Legacy::CryCommon
+)