Support for iterating through the audit log

[mesozoic]

This branch allows enterprise users to iterate through audit log events with something like this:

enterprise = api.enterprise("ent...")
for page in enterprise.audit_log(sort_asc=True):
    for event in page.events:
        handle_event(event)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (ba96d6d) 99.61% compared to head (6166fa7) 99.63%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #330 +/- ## ========================================== + Coverage 99.61% 99.63% +0.01% ========================================== Files 24 25 +1 Lines 1806 1894 +88 ========================================== + Hits 1799 1887 +88 Misses 7 7 ```

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