Add the option to show kythe facts in the debug indexer

PiperOrigin-RevId: 457600595

Author: martindemello

pytype/tools/xref/parse_args.py

@@ -34,6 +34,9 @@ def add_kythe_field(parser, field):
   parser.add_argument("--show-types", action="store_true",
                       dest="show_types", default=None,
                       help="Display inferred types.")
+  parser.add_argument("--show-kythe", action="store_true",
+                      dest="show_kythe", default=None,
+                      help="Display kythe facts.")
   # TODO(b/124802213): There should be a cleaner way to do this.
   parser.add_argument(
       "--imports_info", type=str, action="store",