Support for Point-In-Time Queries

[jmeyers35]

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

Queries are a useful way to debug long-running or closed Workflow executions, but they always entail replaying the entire workflow history. Sometimes, if a workflow has a lot of internal state that changes throughout its lifetime, it could be useful to interrogate what its state was at a particular point in time.

Describe the solution you'd like

The ability to query a Workflow at a particular history event. In other words, the ability to specify an event N along with the Query. The Workflow will only be replayed up to event N before returning the Query result.

Additional context

Potentially related issue: https://github.com/temporalio/features/issues/233