Doc string for pandas.Timestamp.max, pandas.Timestamp.min
Context in https://github.com/pandas-dev/pandas/issues/59458

Addressed:
- pandas.Timestamp.max
- pandas.Timestamp.min

Changes done:

- Added docstring for the above
- Added an attribute section
Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.