Add a new `events` knowledge domain covering AL events & subscribers,
wired into the AL review pipeline.
- 3 atomic articles (+ .good.al/.bad.al samples) under
microsoft/knowledge/events/: the IsHandled override pattern, thin
OnBefore/OnAfter integration-event publishers, and static vs manual
subscribers.
- New leaf skill microsoft/skills/review/al-events-review.md sourcing the
events domain.
- Wired into microsoft/skills/review/al-code-review.md (sub-skills + Source
+ description) and README.md (leaf-skill count + domain list).
AL event syntax verified against Microsoft Learn. Samples are
demonstration-only (not compiled by CI). Additive change; no contract change.
Part of #34.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
