Publish the core rules to npm

[rviscomi]

Enable capo extensibility by publishing the capo ruleset to npm.

• [x] Publish to npm
• [ ] Write consumer-facing docs

[rviscomi]

Rules are now in their own module: https://github.com/rviscomi/capo.js/blob/main/src/lib/rules.js

[rviscomi]

https://www.npmjs.com/package/@rviscomi/capo.js

@danielroe how does that look? Hope that works for you.

[rviscomi]

Just realized I'll also need to write a whole new class of documentation 😅

[danielroe]

Nice! 👌

Will refactor downstream to use this.