Add the possibility to watch a JSON endpoint

[pocesar]

Using lodash get, use CheerioCrawler instead of Puppeteer to load a JSON endpoint and access a path either using a dot notation path like data.edges.0.price or an array of strings. If it's a 'fork' material, let's close the issue

https://helpcenter.octoparse.com/hc/en-us/articles/360028283392-Scrape-data-from-JSON-with-Octoparse