Consider switching to ESM only build/artifacts

[bd82]

Why

Reduce maintenance overhead of supporting multiple consumption options, currently:

1. commonjs
2. UMD bundle
3. UMD minified bundle
4. ESM wrapper
5. ESM bundle
6. ESM minified bundle

For example Chevrotain currently uses two bundling tools, both esbuild and webpack

When

Likely still too early to do so, need to give the JS / Node community time to adjust.
Some popular packages have started doing so already, we should keep track of their progress and/or success in doing so.

• The ESM move sindresorhus/meta#15
• https://github.com/node-fetch/node-fetch/releases/tag/v3.0.0

How

• Compile to ESM with TypeScript
• Major version with breaking changes
• Remove webpack, and attempt to use onlyesbuild
• Remove minified UMD packages
• Update playground / benchmarks to use ESM resources.
• Update docs to clearly indicate the package is ESM only.

[bd82]

I think this should be evaluated at April 2023 once nodejs 16 is deprecated
and all LTS nodejs versions will support ESM.

[bd82]

Switching to lodash-es and compiling typescript to ESM instead of commonjs seems to reduce the minified bundle size
by ~20% (40Kb).

[bd82]

Done in: #1953

I'm still keeping the UMD artifacts (chevrotain.js / chevrotain.min.js) for browser usage.
But from nodejs only ESM is supported.