Add nix-develop alias

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/console/nix-develop/default.nix

@@ -0,0 +1,16 @@
+{
+  user ? throw "user argument is required",
+  home ? throw "home argument is required",
+}:
+{ ... }:
+{
+  home-manager.users.${user}.programs.zsh.initExtra = ''
+    nix-develop() {
+      if [ -z "$1" ]; then
+        echo "Usage: nix-develop <shell>"
+        return 1
+      fi
+      nix develop self#"$1" -c "$SHELL"
+    }
+  '';
+}