[tacker][ptg] Caracal PTG schedule

Hi team,

I've booked rooms 6:00-8:00 UTC from Tuesday to Thursday [1], and setup etherpad for our vPTG [2]. Please add your proposals for Caracal or give any feedback on the topics.

[1] https://ptg.opendev.org/ptg.html [2] https://etherpad.opendev.org/p/oct2023-ptg-tacker

Thanks, Yasufumi