pythongh-97008: Add a Python implementation of AttributeError and NameError suggestions (python#97022)

Relevant tests moved from test_exceptions to test_traceback to be able to
compare both implementations.

Co-authored-by: Carl Friedrich Bolz-Tereick <cfbolz@gmx.de>

Author: ambv

.gitattributes

@@ -73,6 +73,7 @@ Include/internal/pycore_runtime_init_generated.h    generated
 Include/opcode.h                                    generated
 Include/token.h                                     generated
 Lib/keyword.py                                      generated
+Lib/test/levenshtein_examples.json                  generated
 Lib/test/test_stable_abi_ctypes.py                  generated
 Lib/token.py                                        generated
 Objects/typeslots.inc                               generated