nixos: profiles: move from top-level

My profiles are actually just "special" NixOS modules in that they
orchestrate settings that usually span the NixOS/home-manager boundary,
or otherwise set up configurations from multiple modules at once.

modules/nixos/profiles/default.nix

@@ -0,0 +1,12 @@
+# Configuration that spans accross system and home, or are almagations of modules
+{ ... }:
+{
+  imports = [
+    ./bluetooth
+    ./devices
+    ./gtk
+    ./laptop
+    ./wm
+    ./x
+  ];
+}