Latest version of `@typeberry/pvm` always available.

Currently every time we change something in typeberry PVM we need to publish a new version to npm and then create a PR and update the code in pvm-debugger.
It would be cool to figure out how to shorten that release-cycle to always have up-to-date typeberry PVM.

The idea is to maybe have something similar to other PVMs, where the latest version is fetched from some URL?
- However the challenge is to load a JS code from an external domain (cross-origin issues)?
- Can we fetch the JS code using `