Refactor the whole codebase. Most notable changes:

- No more fail2ban. It didn't work properly
  anyways, I'll need to look into this in the future
- No nix-super. I don't need it and the overlay is
  broken so I'm waiting for that to be fixed first.
- Uses nh instead of nixos-rebuild. This is much
  better.

hosts/disk/hardware.nix

@@ -0,0 +1,27 @@
+{ config, lib, ... }: with lib;
+
+systemConfiguration {
+  boot.loader = {
+    systemd-boot = enabled {
+      editor = false;
+    };
+
+    efi.canTouchEfiVariables = true;
+  };
+
+  boot.initrd.availableKernelModules = [ "ahci" "ata_piix" "nvme" "sr_mod" ];
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/root";
+    fsType = "ext4";
+  };
+
+  fileSystems.${config.boot.loader.efi.efiSysMountPoint} = {
+    device = "/dev/disk/by-label/boot";
+    fsType = "vfat";
+  };
+
+  swapDevices = [{
+    device = "/dev/disk/by-label/swap";
+  }];
+}