Extend Matomo Tag with options for SearchTracking

[tomper00]

Tracking more advanced siteSearch containing keywords and searchCount is a bit tricky right now. It requires you to create a custom HTML Tag.

I think it would be helpful to extend the Matomo Tag with a Search Tracking type called Search.

It would contain the following settings:
keyword, category & searchCount

I think I pretty much know how to code this but I would like some feedback on the idea first.
@Chardonneaur & @sgiehl - what do you think? I saw your discussion in 569

I have thought about this myself for I while.

[tomper00]

Ok so I added a new pull request for this
#575

[MatomoForumNotifications]

This issue has been mentioned on Matomo forums. There might be relevant details there:

https://forum.matomo.org/t/tag-manager-and-track-site-search/49379/2