Install all Emacs dependencies at once

[FrostyX]

Currently, we do

(frostyx/dnf :install "python3-virtualenv")
(frostyx/dnf :install "leiningen")
(frostyx/dnf :install "emacs-rpm-spec-mode")

Which runs DNF multiple times, asks for password multiple times, etc. See also
https://gitlab.com/jabranham/system-packages/-/merge_requests/36

We should have a function that is run only when needed (maybe only through M-x) and does all installations within a single DNF command. Can be done like this:

(use-package emacs
  :ensure-system-package "nano vim")

Maybe we should replace all the individual installs with a function call that appends the package to a list of dependencies and then run all of them at once.

See https://www.gnu.org/software/emacs/manual/html_node/use-package/use_002dpackage_002densure_002dsystem_002dpackage.html

Alternatively we could use ansible but I'd like my Emacs setup to be somewhat self-contained.