[Feature Request] Make downloadable package via npm

[fbaba-nibtravel]

Hi,

Thanks for the schema json! It has been a life saver!
However, at the moment I need to manually copy the schema.json into our solution.

The use case is simple:
We have a monorepo and we need to dynamically generate the buildkite pipeline and we built a node.js tool to do so. Having the schema allow us to validate the generated pipeline via unit test.
Hence, it would be very useful to have a library with a proper version so it can be detected by npm/yarn tools and we can update the schema when buildkite does instead of manually tracking the changes.