install missing headers

Author: thelfer

include/CMakeLists.txt

@@ -21,6 +21,8 @@ mgis_header(MGIS ThreadedTaskResult.hxx)
 mgis_header(MGIS ThreadedTaskResult.ixx)
 mgis_header(MGIS/Utilities Markdown.hxx)
 mgis_header(MGIS/Utilities OptionalReference.hxx)
+mgis_header(MGIS/Utilities Construct.hxx)
+mgis_header(MGIS/Utilities Construct.ixx)
 mgis_header(MGIS/Utilities Invoke.hxx)
 mgis_header(MGIS/Utilities Invoke.ixx)
 mgis_header(MGIS LibrariesManager.hxx)