Pre-install zip

And also add `unzip` to the list so it doesn't accidentally get
uninstalled in the future if we shift around our packages to remove the
thing that's incidentally pulling it in.

Resolves #314

mkosi.conf.d/10-packages-cli.conf

@@ -30,10 +30,12 @@ Packages=alsa-utils # alsamixer and other useful audio debugging tools
          tldr
          trash-cli # safer way to remove files from the CLI
          tree
+         unzip # the `unzip` CLI unarchiving tool
          usbutils # `lsusb` and other useful troubleshooting tools
          vim
          wget
          wl-clipboard
          ydotool # Basic TUI and GUI app automation
+         zip # the `zip` CLI archiving tool
          zsh
          zsh-completions