infra: add flake module and crocus exports

infra/crocus.tf

@@ -62,3 +62,7 @@ resource "hcloud_firewall" "crocus_firewall" {
     source_ips = ["0.0.0.0/0", "::/0"]
   }
 }
+
+output "crocus_ipv4" {
+  value = hcloud_primary_ip.crocus_ipv4.ip_address
+}

infra/flake-module.nix

@@ -0,0 +1,18 @@
+{
+  flake.infra =
+    let
+      tf_outputs = builtins.fromJSON (builtins.readFile ../infra/outputs.json);
+    in
+    {
+      machines = {
+        verbena = {
+          ipv4 = tf_outputs.verbena_ipv4.value;
+          ipv6 = tf_outputs.verbena_ipv6.value;
+          gateway6 = tf_outputs.verbena_gateway6.value;
+        };
+        crocus = {
+          ipv4 = tf_outputs.crocus_ipv4.value;
+        };
+      };
+    };
+}

infra/outputs.json

@@ -1,4 +1,9 @@
 {
+  "crocus_ipv4": {
+    "sensitive": false,
+    "type": "string",
+    "value": "116.203.18.122"
+  },
   "verbena_gateway6": {
     "sensitive": false,
     "type": "string",