Log backtraces on an error

Author: hsaunders1904

pyautoenv.py

@@ -485,4 +485,6 @@ def operating_system() -> Union[int, None]:
         sys.exit(main(sys.argv[1:], sys.stdout))
     except Exception as exc:  # noqa: BLE001
         sys.stderr.write(f"pyautoenv: error: {exc}\n")
+        if __debug__:
+            logger.exception("backtrace:")
         sys.exit(1)