fix: resolve proxmark firmware flashing issues

modules/nfc/default.nix

@@ -0,0 +1,16 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.nfc;
+in
+{
+  options.nfc = {
+    user = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+    };
+  };
+  config = lib.mkIf (cfg.user != null) {
+    users.users.${cfg.user}.extraGroups = [ "dialout" ];
+  };
+}