Separate System and User packages

- Move user programs out of systems section and int
  user section
- Install user packages with home manager rather than
  system wide

user/utilities/default.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./3d-printing.nix
+    ./bootable-media.nix
+    ./file-syncing.nix
+    ./keyboard-configuration.nix
+    ./passwords.nix
+  ];
+}