Usesr are confused (me too) on what jsonpath syntax is supported

[mstoykov]

Investigating this question I tried https://jsonpath.com/ with the idea the original user-provided "jsonpath" was just .. slightly wrong, but it worked (after changing the parentCompanyId).

Looking at this jsonpath implementation documentation it seemed like what the user does isn't supported, but I really don't know what ours is based on, and because there is no link to any external project on https://jslib.k6.io/ I or a user have no idea what is actually supported and on what it is based.

So I propose that we start providing either our own documentation for these libraries or link to the documentation of the respected library with some warning that newer features might not be supported