Add RegExp.prototype.hasIndices, RegExpExecArray.indices, and RegExpMatchArray.indices

[Dragory]

Original proposal: https://github.com/tc39/proposal-regexp-match-indices

MDN:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/hasIndices
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec#description

Implemented by major browsers: https://github.com/mdn/browser-compat-data/blob/06e29c8bf5c29869288b68d8d027ba34f76e5981/javascript/builtins/RegExp.json#L454

Also available in Deno and, despite not being listed in mdn/browser-compat-data, at least Node.js v16.12.0.

[saschanaz]

This should go microsoft/TypeScript as this repo does not cover JavaScript changes.

[Dragory]

Thank you! For anyone landing here from Google, there is an existing issue in the TypeScript repository here: microsoft/TypeScript#44227