feat: rearrange nix modules

hardware/base.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    ./planck.nix
+  ];
+
+  boot.initrd.luks.devices = {
+    root = {
+      device = "/dev/disk/by-partlabel/nixos";
+      allowDiscards = true;
+    };
+  };
+  boot.supportedFilesystems = [ "ntfs" ];
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  services.smartd.enable = true;
+  services.smartd.notifications.x11.enable = true;
+
+  # Bluetooth
+  hardware.bluetooth.enable = true;
+  hardware.bluetooth.config = {
+    General = {
+      Enable = "Source,Sink,Media,Socket";
+    };
+  };
+
+  # Sound.
+  sound.enable = true;
+  hardware.pulseaudio = {
+    enable = true;
+    support32Bit = true;
+    extraModules = [ pkgs.pulseaudio-modules-bt ];
+    package = pkgs.pulseaudioFull;
+  };
+
+  # USB devices
+  hardware.u2f.enable = true;
+}
+