feat: Add a custom extractor for www.engadget.com. (#552)

* feat:Add a custom extractor for ma.ttias.be.

When parsing content for cron.weekly issues, such as the one at https://ma.ttias.be/cronweekly/issue-130/, Mercury Parser would remove headings and ordered lists that were part of the content. This resolves that as follows:

* Remove "id" attributes from "h1" and "h2" elements. Those attributes would result in the elements having a low weight.
* Since Mercury Parser demotes "h1" elements to "h2", demote "h2" elements to "h3".
* Add class="entry-content-asset" to "ul" elements to avoid them being removed.

* removed redundant comment.

* feat: Add a custom extractor for engadget.com.

Co-authored-by: John Holdun <john@johnholdun.com>

cli.js

@@ -26,7 +26,7 @@ const {
   extendedListTypes,
   headers,
   addExtractor,
-  version,
+  version
 ) => {
   if (version) {
     console.log(package_info.version);