Feature summary (what you would like to be able to do and where):

Easily show how many entities of each type there are in a wikibase. This should probably be added to the stats; for example perhaps it should be done using https://www.mediawiki.org/wiki/Manual:Hooks/SpecialStatsAddExtra

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):

Displaying how many entities of each type there are when adding data to wikibase.world

Benefits (why should this be implemented?):

It would mean I don't need to paginate through all pages
${actionApi}?action=query&list=allpages&apnamespace=${propertyNamespaceId}&aplimit=500&format=json${extraPagigParams};`