Feature: attr_reader for LeakyBucket config options

[stevenou]

Sidekiq::Limiter::Window has attr_reader :interval, :count, :bucket and Sidekiq::Limiter::Bucket has attr_reader :interval, :count.

I propose adding attr_reader for the configuration options to the limiters that don't have it. I could specifically use it on Sidekiq::Limiter::LeakyBucket, which doesn't have any attribute readers. It would be nice to expose the size and interval.

My use case is that I'm reading the limiter when hitting OverLimit error and using the limiter config details to calculate an optimal backoff time (see discussion in #6141)

[mperham]

Thanks for the suggestion, it’s a good idea. 👍🏻