Make tycho_client a python package, small bugfixes

testing/cli.py

@@ -15,13 +15,13 @@ def main() -> None:
         help="Flag to activate logs from Tycho.",
     )
     parser.add_argument(
-        "--db_url",
-        type=str,
-        help="Postgres database URL for the Tycho indexer.",
+        "--db_url", type=str, help="Postgres database URL for the Tycho indexer."
     )
     args = parser.parse_args()
 
-    test_runner = TestRunner(args.test_yaml_path, args.with_binary_logs, db_url=args.db_url)
+    test_runner = TestRunner(
+        args.test_yaml_path, args.with_binary_logs, db_url=args.db_url
+    )
     test_runner.run_tests()