feat: Generic pretty-printer implementation

[vadimkibana]

Summary

Partially addresses: elastic/kibana#242923

See README for detailed description of this library.

Below is an example of how the printer works in a nutshell:

import { text, group, indent, line, softline, join, layout } from './printer';

const doc = group([
  text('SELECT'),
  indent([line, join(
    [text(','), line],
    [text('a'), text('b'), text('c')]
  )]),
  line,
  text('FROM t'),
]);

layout(doc, { printWidth: 40 });
// SELECT
//   a,
//   b,
//   c
// FROM t

layout(doc, { printWidth: 80 });
// SELECT a, b, c FROM t

Details

Technical details, breaking changes or considerations you have made while working in this PR.

Checklist

• Unit tests have been added or updated.
• The proper documentation has been added or updated.
• If this PR contains breaking changes, you have explained them using the BREAKING CHANGE: change syntax.
• The PR title has the correct conventional commit label in the title, this is crucial for the correct versioning of this package. Check the following cheat shit.

  Title Label	Release
  breaking: true (!)	major
  feat	minor
  fix	patch
  refactor	patch
  perf	patch
  build	patch
  docs	patch
  chore	patch
  revert	patch

[stratoula]

@vadimkibana are you going to also add a Readme? It will be easier for me to follow the implementation 🙏

[vadimkibana]

@stratoula Yes! Here it is.

[sddonne]

Would be better to use ES|QL examples?

[vadimkibana]

Maybe 🤷

[stratoula]

This looks very nice! 🙌

[stratoula]

Important 😄

[stratoula]

Suggested change

	export const literalline: Doc = [
	export const literalLine: Doc = [

Not sure if this is intended but I see we have this format in general so I guess we want to be consistent (?)

[vadimkibana]

I'll rename in next PR.

[stratoula]

Suggested change

	export const literallineWithoutBreakParent: LineNode = {
	export const literalLineWithoutBreakParent: LineNode = {

same as above

[vadimkibana]

I'll rename in next PR.