events: add unique events benchmark
Following up on https://github.com/nodejs/node/pull/44627#issuecomment-1247703546, adding benchmark written by @mscdex
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Following up on https://github.com/nodejs/node/pull/44627#issuecomment-1247703546, adding benchmark written by @mscdex