chore: refactor code to es module

[gka]

trying to bring chroma into 2024...

TODOS:

• refactor code to ES6 modules
• update package.json
• switch to pnpm
• upgrade eslint
• setup prettier for code formatting
• update husky script to ensure tests are run on commit
• move bundles to dist/
• refactor tests to vitest (29 done, 20 remaining)
• bump version

[gka]

@zyyv (or anyone else) in case you want to help, feel free to take care of converting some more of the test files from Vows to Vitest. I've been using ChatGPT for this (asking to convert tests from Vows.js to Vitest) and it's been working quite good so far, although it's not 100% perfect.

Here's my prompt

Can you convert the following Vows.js unit test to Vitest? You don't need to include the Vows test in your output and can also omit the Vitest setup instructions.

TEST HERE

[zyyv]

I'd be happy to help with the test migration refactoring, and I'll check the remaining test cases in my free time.

[origami-z]

This change caused a bunch of downstream problems, and should happen in a breaking major change.