feat(refactor): WIP refactor server modules

modules/server/services/lidarr/default.nix

@@ -0,0 +1,17 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  unit = "lidarr";
+  srv = config.server;
+  cfg = config.server.services.${unit};
+in {
+  config = lib.mkIf cfg.enable {
+    services.${unit} = {
+      enable = true;
+      user = srv.user;
+      group = srv.group;
+    };
+  };
+}