move sites to their own modules

modules/nixos/sites/cv/default.nix

@@ -0,0 +1,34 @@
+{
+  lib,
+  config,
+  pkgs,
+  inputs,
+  ...
+}:
+with lib;
+with lib.custom; let
+  cfg = config.sites.cv;
+in {
+  options.sites.cv = with types; {
+    enable = mkBoolOpt false "Enable CV site";
+
+    domain = mkStringOpt "cv.zackster.zip" "The domain for the site";
+  };
+
+  config = mkIf cfg.enable {
+    warnings =
+      lib.optional (!config.services.nginx.enable)
+      "CV site is enabled, but it depends on Nginx which is not enabled.";
+
+    services.nginx.virtualHosts.${cfg.domain} = {
+      forceSSL = true;
+      enableACME = true;
+      locations."/" = {
+        root = "${inputs.resume.packages.${pkgs.system}.default}";
+      };
+      extraConfig = ''
+        index resume.pdf;
+      '';
+    };
+  };
+}