[SPIKE] Publish npm packages

This tool currently supports cargo packages, and makes the release process far easier.

Could it be modified to also support npm packages? We have npm packages in several repos, including holochain-client-js, tryorama, hc-spin-rust-utils, and possibly others.

Note that hc-spin-rust-utils npm package depends on also releasing a cargo package, and may not be feasible to automate with the same process.

Prioritize the simpler npm packages first.

AC:
- Determine if it makes sense to modify this tool to publish npm packages, or whether npm packages need their own tooling.
- Outline changes necessary to support simpler npm packages
- If spike time permits, implement as a PR
- Create another issue to support more complex npm packages like hc-spin-rust-utils, if it requires additional work