`txthrottler`: move `ThrottlerInterface` to `go/vt/throttler`, use `slices` pkg, add stats#16248

Merged

timvaillancourt merged 8 commits intovitessio:mainfrom

timvaillancourt:txthrottler-use-slices

Jul 17, 2024

Commits on Jun 16, 2024

`txthrottler`: use slices for comparison, cleanup
timvaillancourt
committed

Commits on Jun 17, 2024

Commits on Jun 22, 2024