Refactor custom options

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

hosts/himalia/default.nix

@@ -3,15 +3,15 @@
   imports = [
     inputs.disko.nixosModules.disko
     ./format.nix
-
     ./hardware
 
+    ../common/configs/system
+
     ../common/configs/system/bluetooth
     ../common/configs/system/boot
     ../common/configs/system/brightnessctl
     ../common/configs/system/btrbk
     ../common/configs/system/btrfs
-    ../common/configs/system/cpu
     ../common/configs/system/documentation
     ../common/configs/system/getty
     ../common/configs/system/git