feat(wpcarro/emacs): Package bytes.el

Another meh package, but let's finish the job and package it up.

Change-Id: I7852a776c93c8c6717878a5ee0742287d2d23052
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7394
Reviewed-by: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI

users/wpcarro/emacs/pkgs/bytes/default.nix

@@ -0,0 +1,25 @@
+{ pkgs, depot, ... }:
+
+let
+  bytes = pkgs.callPackage
+    ({ emacsPackages }:
+      emacsPackages.trivialBuild {
+        pname = "bytes";
+        version = "1.0.0";
+        src = ./bytes.el;
+        packageRequires =
+          (with depot.users.wpcarro.emacs.pkgs; [
+            tuple
+          ]);
+      })
+    { };
+
+  emacs = (pkgs.emacsPackagesFor pkgs.emacs28).emacsWithPackages (epkgs: [ bytes ]);
+in
+bytes.overrideAttrs (_old: {
+  doCheck = true;
+  checkPhase = ''
+    ${emacs}/bin/emacs -batch \
+      -l ert -l ${./tests.el} -f ert-run-tests-batch-and-exit
+  '';
+})