bug#56617: [PATCH] for Mongolian input

[Eli Zaretskii]

> From: Garid Zorigoo <garidzorigoo@gmail.com>
> Date: Tue, 4 Apr 2023 17:39:51 +0900
> 
> This is [patch] for Mongolian Input.
> 
> I only added Mongolian layout into the `lisp/leim/quail/cyrillic.el` and sent 
> it as a patch.
> 
> Please note that my knowledge in elisp is basically zero.
> So, If you have any improvement/modification, please go ahead.

Thank you for your contribution.

Is this keyboard layout already in use in some keyboards used for
typing Mongolian (and you just copied it in Emacs LEIM format), or did
you invent the layout yourself?  In other words, where did you take
the idea of which letter to place on which key?  I'm asking because
with the exception of 2 characters, the letters are all present in
other Cyrillic input methods, but the arrangement of the keys is
different, so I'd like to understand the reasons for the differences.