* Add support for null safe indexing e.g. for arrays
This follows the JavaScript syntax:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining#syntax
* add docs
* Add test for safe access index to non indexable
Co-authored-by: Josiah Hilden <jhilden13@gmail.com>
Co-authored-by: Josiah Hilden <jhilden13@gmail.com>
Co-authored-by: ElKowar <5300871+elkowar@users.noreply.github.com>