feat(systemModules:host): add initial host configuration module

used to define general host configuration, including:

- hardware
- name
- admin
- type
- role

system/modules/host/hardware/cpu/intel/default.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  hardware = config.systemModules.host.hardware.cpu;
+in
+
+{
+  # TODO: put kvm/gvt behind virtualization module flag
+
+  config = mkIf (elem hardware.type ["intel"]) {
+    boot = {
+      kernelModules = ["kvm-intel"];
+      kernelParams = ["i915.fastboot=1" "enable_gvt=1"];
+    };
+    hardware.cpu.intel.updateMicrocode = true;
+    environment.systemPackages = [pkgs.intel-gpu-tools];
+  };
+}