chore(n8n): add module and job specification for Nomad deployment

modules/n8n/main.tf

@@ -0,0 +1,35 @@
+resource "nomad_job" "n8n" {
+  depends_on = [
+    nomad_csi_volume_registration.nfs_volume,
+  ]
+
+  jobspec = file("${path.module}/jobspec.nomad.hcl")
+}
+
+data "nomad_plugin" "nfs" {
+  plugin_id        = "nfs"
+  wait_for_healthy = true
+}
+
+resource "nomad_csi_volume_registration" "nfs_volume" {
+  depends_on = [data.nomad_plugin.nfs]
+
+  lifecycle {
+    prevent_destroy = true
+  }
+
+  plugin_id   = "nfs"
+  name        = "martinibar_prod_n8n_data"
+  volume_id   = "martinibar_prod_n8n_data"
+  external_id = "martinibar_prod_n8n_data"
+
+  capability {
+    access_mode     = "multi-node-single-writer"
+    attachment_mode = "file-system"
+  }
+
+  context = {
+    "server" = "martinibar.lan",
+    "share"  = "/volume1/csi/n8n/data",
+  }
+}