DRAFT: Add draft design of new runner autoscaling architecture
What does this MR do?
Adds the description of new Runner autoscaling solution design that we're preparing in context of #28848 (closed) and &2502.
Why was this MR needed?
What's the best way to test this MR?
Preview can be found at http://main-runner-3301.178.62.207.141.nip.io/runner/internal/engineering/designs/new-autoscaling-architecture/.
What are the relevant issue numbers?
Closes #28848 (closed)
Edited by Tomasz Maczukin