Re-organise hetznix configuration

nix/hosts/hetznix/security/acme.nix

@@ -0,0 +1,37 @@
+{ config, ... }:
+
+{
+  security.acme = {
+    acceptTerms = true;
+
+    defaults = {
+      dnsProvider = "cloudflare";
+      email = "oliver@oliverdavies.uk";
+      environmentFile = config.age.secrets.cloudflare.path;
+      webroot = null;
+    };
+
+    certs."oliverdavies.uk" = {
+      domain = "oliverdavies.uk";
+
+      extraDomainNames = [
+        # TODO Refactor to use a wildcard certificate.
+        "2020.oliverdavies.uk"
+        "bootstrap-with-tailwind.oliverdavies.uk"
+        "florida-drupalcamp-tailwind-css.oliverdavies.uk"
+        "luke.oliverdavies.uk"
+        "phpsw-sculpin-demo.oliverdavies.uk"
+        "rebuilding-acquia.oliverdavies.uk"
+        "rebuilding-bartik.oliverdavies.uk"
+        "rebuilding-bristol-js.oliverdavies.uk"
+        "rebuilding-symfony.oliverdavies.uk"
+        "tailwindcss-demo.oliverdavies.uk"
+        "talking-drupal-tailwindcss.oliverdavies.uk"
+        "tome.oliverdavies.uk"
+        "wp-tailwind.oliverdavies.uk"
+        "www.oliverdavies.uk"
+        "zet.oliverdavies.uk"
+      ];
+    };
+  };
+}

nix/hosts/hetznix/security/default.nix

@@ -0,0 +1,3 @@
+{
+  imports = [ ./acme.nix ];
+}