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/hosts/keith/configuration.nix

@@ -0,0 +1,14 @@
+{ inputs, ... }: {
+  flake.modules.nixos.keith = {
+    imports = with inputs.self.modules.nixos;
+      with inputs.self.factory; [
+        system-desktop
+        (autologin "weckyy702")
+        (grub-boot "/dev/nvme0n1")
+        development-tools
+        i18n-de
+
+        #TODO: moar aspects
+      ];
+  };
+}