Enable highlighting for .qs files

Example file in Qt installation:

installscript.qs in:
Qt\Tools\QtInstallerFramework\3.2\examples\registerfileextension\packages\org.
qtproject.ifw.example.registerfileextension\meta

It does not have highlighting. 

If you go and modify it to .js then it has.

Could the highlighting  be enabled also for .qs files.