Add build-configs from its derivation

It currently uses a local version of `build-configs`. I need to look
into how to get it to with Nix and a private GitHub repository.

lib/shared/home-manager-packages.nix

@@ -3,6 +3,8 @@ let
   php = pkgs.php82;
   phpPackages = pkgs.php82Packages;
 in with pkgs; [
+  inputs.build-configs.packages.${pkgs.system}.default
+
   awscli2
   bitwarden-cli
   bottom

lib/shared/modules/zsh.nix

@@ -266,12 +266,6 @@
       alias rdci="run drush config:import -y"
       alias rduli="run drush uli"
 
-      # Build Configs.
-      ialias build-configs="nix shell nixpkgs#php82 --command ~/Code/github.com/OliverDaviesLtd/build-configs/main/bin/build-configs app:generate"
-      ialias build-configs-update-all="~/Code/github.com/OliverDaviesLtd/build-configs-updater/update.sh"
-      alias bc=build-configs
-      alias bcu=build-configs-update-all
-
       alias -g A1="| awk '{print \$1}'"
       alias -g Fj='| jq .'
       alias -g Fy='| yq .'