Trino Ops: Implement KEDA to scale trino to 0-N

[ravenac95]

What is it?

I only learned of this recently, but there's a tool (listed below) that has a queuing http proxy that can be used to scale any deployment to 0. The queuing proxy allows us to sleep some of the services. I believe this would be very good for many of the things we run but particularly, trino (at least for now)

Tool:

• https://github.com/kedacore/keda
• https://github.com/kedacore/http-add-on