gn package, could you please add the emacs gn-mode.el ?

[Yi Zheng via arch-general <arch-general@xxxxxxxxxxxxx>]

Hi, Evangelos

   in the source tree of 'gn' package, the emacs mode scripts has been
added in misc/emacs/gn-mode.el

Could you please add  that mode into the gn release package in ArchLinux ?