Adding tags to promise actors

[ericljiang]

(https://discord.com/channels/795785288994652170/1321173617375055894)

In our application we track all actors' start and end using the Inspect API and we use tags to categorize them. However we don't have a way to categorize actors created with fromPromise(). We don't need different tags for different snapshots over the course of the actor life, just need a way to identify a category for the actor itself. My understanding is that currently promise actors do not support tags.