Support ability to watch blueprint changes and deploy automatically during dev

## Describe your feature request

During blueprint development, often developers will make changes frequently and will require them having to re-publish multiple times which can eat away at productivity.

## Describe the solution you'd like

It would be awesome to have something like a `pnpm watch` which monitors changes to the filesystem and re-publishes automatically under some type of 'live-reload' style tag.

## Describe alternatives you've considered

- Re-publish manually

## Additional context

N/A

Start by mapping the existing blueprint publishing flow and how filesystem changes are currently handled; the issue names no files, tests, or entry points. Done means a pnpm watch entry point detects blueprint changes and automatically republishes them under a live-reload-style tag.

Written by the indexing model from the issue text.