docs: takeScreenshot from tests?

[compojoom]

I scanned the docs and this doesn't seem to be mentioned anywhere. Now with detox 8 - are we able to call the screenshot taking API anywhere inside of test? The automatic screenshots are taken at the beginning and at the end of a test, but I want to capture some more screenshots in the middle of a test.

this comment here #541 (comment) mentions a _takeScreenshot(), but this is not existing anymore. Is it possible to take a screenshot in the middle of a test and if yes, can we document this

[noomorph]

See #807