server: initial media server config

modules/nixos/server/services/media-server/users.nix

@@ -0,0 +1,23 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib) elem mkIf;
+  inherit (config.ooknet.server) services;
+in {
+  config = mkIf (elem "media-server" services) {
+    users = {
+      groups = {
+        downloader = {};
+        media = {};
+      };
+      users = {
+        downloader = {
+          isSystemUser = true;
+          group = "downloader";
+        };
+      };
+    };
+  };
+}