Add smartctl exporter

system/monitoring/metrics.nix

@@ -1,6 +1,7 @@
 { ... }:
 {
-  services.prometheus.exporters.node = {
+  services.prometheus.exporters = {
+    node = {
       enable = true;
       openFirewall = true;
       enabledCollectors = [
@@ -8,4 +9,10 @@
         "logind"
       ];
     };
+    smartctl = {
+      enable = true;
+      openFirewall = true;
+      devices = [ "/dev/nvme0n1" ];
+    };
+  };
 }