[Feature Request] Eager Workflow Start

[antlai-temporal]

Is your feature request related to a problem? Please describe.

Support for Eager Workflow Start (EWS) was added in the server in 1.20, and is currently supported in Java, Python, Core, and Go SDKs. It reduces the latency to start a workflow by allowing the client to directly schedule the first workflow task to a local worker. See https://github.com/temporalio/features/issues/242 for details.

The goal is to enable support for EWS in the TS SDK.

Describe the solution you'd like

This is dependent on https://github.com/temporalio/sdk-typescript/issues/1298