[bug#62664] [PATCH] [WIP] gnu: Add emacs-copilot.

[jgart]

Hi Guixers,

Here's a revised patch for emacs-copilot. Please review and let me know
if I can merge it.

This package has been cleaned of all binaries and is now being prepared
for submission to MELPA:

https://github.com/melpa/melpa/pull/9217

I believe it now complies with all requirements for inclusion in GNU
Guix.

I've added Rostislav as a co-author.

WDYT
-- 
all the best,
jgart