Housekeeping

- Update README
- Run shellcheck on .sh files
- Add helper scripts
- Remove eirene vm variant
- Add post-install checklist

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

hosts/eirene/hardware-configuration.nix

@@ -0,0 +1,15 @@
+{ lib, modulesPath, ... }:
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot = {
+    initrd.availableKernelModules = [
+      "nvme"
+      "ahci"
+      "usbhid"
+    ];
+    kernelModules = [ "kvm-amd" ];
+  };
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}