feat(wpcarro/emacs): Package zle.el

The end-goal is to package all of my Elisp libraries. Why?
- More granular builds/tests
- More explicitly defined dependencies
- Separate personal configuration from library code
- Ease distribution

Change-Id: I2507d129d3a0b3bf0cfe70b9790536a8b2093b96
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5969
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>

users/wpcarro/emacs/default.nix

@@ -24,6 +24,10 @@ let
   emacsWithPackages = (emacsPackagesFor emacs28).emacsWithPackages;
 
   wpcarrosEmacs = emacsWithPackages (epkgs:
+    (with wpcarro.emacs.pkgs; [
+      zle
+    ]) ++
+
     (with epkgs.tvlPackages; [
       tvl
     ]) ++