chore(build): Update build system

[donmccurdy]

Dependencies on this repository have gotten stale, with unsupported Node.js and a babel+webpack build with a lot of moving pieces. I ran into trouble trying to make a PR on the repository because ts-node doesn't report useful information for errors in test files, and the old Node.js requirement made updating to a better test runner challenging.

Changes:

• update local development to Node.js v20
• update minimum engine to Node.js v18
• update dependency manager to Yarn v4
• replace ts-node with tsx
• replace babel+webpack with microbundle
• remove old config files
• update CI and create npm publish job on GitHub Actions

Microbundle is optional here, but greatly simplifies things and builds faster. I've considered Vite, but I don't think Vite's "Library Mode" is ready for prime time yet, see CartoDB/carto-api-client#60... it's much better as an application build system, not a library build system, today. The main downside of Microbundle, from my perspective, is the long tail of transient dependencies (as seen in yarn.lock).

A future PR should probably replace both [tape, tsx] with just vitest.

[padawannn]

Could you update the CONTRIBUTING.md ?
https://github.com/CartoDB/carto-api-client/blob/main/CONTRIBUTING.md