Add More Detail to WaitFor() Timeout Errors #556

Short overview

The timeout error thrown for waitFor() could contain more details (similar to find() errors).

Use case

To debug issues more easily.

Detailed description

Currently, when I handle an error thrown by a waitFor call, the only message shown is:

Action timed out after XXXX ms

This message itself is vague, not to mention the absence of the stack trace in the error log.

I think giving a bit of context for where and what this error is, would be extremely helpful.

This is a very simple script which illustrates the point:

const nut = require('@nut-tree/nut-js');
const utils = require('./scripts/utilities');
require('@nut-tree/nl-matcher');

(async () => {
    try {
        nut.screen.config.resourceDirectory = utils.getImagesPath()
        await nut.screen.waitFor(nut.imageResource('continue_btn.png'), 1000);
    } catch (err) {
        console.error(err);
    }
})();

• utils.getImagesPath() simply returns the path of my resource directory
• assuming 'continue_btn.png' is present in the resource directory, but isn't on screen, this code should print the error message "Action timed out after XXXX ms"