Add tools to get issue_events and get_issue_event

[tommaso-moro]

• get_issue_events - all events for the issue https://docs.github.com/en/rest/issues/events?apiVersion=2022-11-28#list-issue-events-for-a-repository
• get_issue_event - issue event details https://docs.github.com/en/rest/issues/events?apiVersion=2022-11-28#get-an-issue-event

There's an open PR for this: #211