[Feature Request] Add DisableEagerExecution to WorkerOptions

[tsurdilo]

Looks like DisableEagerExecution config is missing from WorkerOptions. This allows users to disable eager activities dispatch to this worker.

This is really needed in order to be able to use MaxTaskQueueActivitiesPerSecond, as current service can apply rate limits only from matching task queue, but with eager activity dispatch activity tasks are dispatched from history service on PollActivityTask response directly.