Make neovim the default editor and create an alias for vim.
The NixOS module for neovim is currently broken. Thus, add a note to
`description.md` to switch to that later.
Change-Id: I9345a6e32f3035565e55e50579c97121b4987d83
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57393
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>