(WIP) Support regex in matchers

Describe your idea

Support regular expression in Detox matchers

Specifically in by.text(), by.label(). This can be useful since text and labels may include dynamic content (e.g. date).

Also, I suggest to change the current API, from: https://github.com/wix/Detox/blob/246317d3ee5b7587bb966c78204b5def5b72dfaf/detox/index.d.ts#L804

To:

text(text: string | RegExp): NativeMatcher;

---

Usage example

This code will find an element with the text "The year is 2023", if exists:

const someElement = element(by.text(/The year is: \d{4}/));

While this code won’t:

const someElement = element(by.text('The year is: \d{4}'));

[noomorph]

@asafkorem the only pitfall I see is that we might need to standardize RegExp mechanisms between iOS/Android/JS…

[d4vidi]

Nevertheless I’d like this kind of an API to come with a warning of some sort, that would explain that ideally, whichever text we trying to match should be deterministic to the point it can be predetermined down to the character. Of course, this is not always the case in unmocked tests, but generally this should be the preferred situation.