Add Google Scholar to the search engines.

[BramVerb]

I would like to search google scholar through the pop os launcher. The matches are subject to discussion, I typically use scholar, but DuckDuckGo uses the !gsc shortcut, so I added that as well.

[BramVerb]

I also noticed that the indentation of all entries is not consistent, if you want I can also fix that. Most uses spaces, but some use tabs. 😅

[mmstick]

Thanks!