Add Deployment Options for Eager start (#645)

**What changed?**
Added `eager_worker_deployment_options` to
`StartWorkflowExecutionRequest`.

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**Why?**
So server knows the versioning info of the worker who would process the
eager task. Server can ignore the eager flag if the worker doesn't have
the Current version.

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**Breaking changes**
None

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**Server PR**

Author: ShahabT