Proposed change to TS C++ API

A small chage is proposed in this PR: https://github.com/apache/trafficserver/pull/9187 In Cleanup.h, allow the continuation of TxnAuxDataMgr to be used for general purposes.

Re: [ANNOUNCE] Apache Traffic Server Summit Fall 2022

I posted the schedule on the wiki. If you submitted a talk please verify that the seclude works for you and that your talk is shown on the schedule. We do have a little bit of space in the schedule if anyone wants to submit a last minute talk. The address of the summit and a place where some