Update to (somewhat?) dendritic pattern

Heavily inspired by https://github.com/Doc-Steve/dendritic-design-with-flake-parts.

> Atomic commits? Never heard of them!

modules/programs/zoxide.nix

@@ -0,0 +1,9 @@
+{
+  flake.modules.homeManager.zoxide = {
+    programs.zoxide = {
+      enable = true;
+      enableZshIntegration = true;
+      options = [ "--cmd cd" ];
+    };
+  };
+}