feat: add nix server provision

pkgs/helpers/templates/disko-uefi-ext4.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  ...
+}:
+{
+  # Generated by nodeiwest host init.
+  # Replace the disk only if the provider exposes a different primary device.
+  disko.devices = {
+    disk.main = {
+      type = "disk";
+      device = lib.mkDefault "@@DISK_DEVICE@@";
+      content = {
+        type = "gpt";
+        partitions = {
+          ESP = {
+            priority = 1;
+            name = "ESP";
+            start = "1MiB";
+            end = "512MiB";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+          swap = {
+            size = "@@SWAP_SIZE@@";
+            content = {
+              type = "swap";
+              resumeDevice = true;
+            };
+          };
+          root = {
+            size = "100%";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/";
+            };
+          };
+        };
+      };
+    };
+  };
+}