Agents protocol feedback

[biglittlebigben]

This includes some feedback on the agents protocol:

• Rename JobDescription to AgentDispatch
• Remove participant_identity entry in the dispatch
• Deprecate namespace
• Add an agent_name field to specify what agent workers a job should be dispatched to

This also allows setting a room configuration in the token.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 21e4566e1df868d58cfe79dcf4acca53cdb5a419

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

💥 An error occurred when fetching the changed packages and changesets in this PR

``` Some errors occurred when validating the changesets config: The package or glob expression "github.com/livekit/protocol" specified in the `fixed` option does not match any package in the project. You may have misspelled the package name or provided an invalid glob expression. Note that glob expressions must be defined according to https://www.npmjs.com/package/micromatch. ```