Move Nix files back to the root of the project

hosts/hetznix/security/acme.nix

@@ -0,0 +1,20 @@
+{ 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 = [ "*.oliverdavies.uk" ];
+    };
+  };
+}

hosts/hetznix/security/default.nix

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