Content filtering: Add a "Code Sample" option under Item Type->Apps

[AlfredBaldenweck]

I was recently pointed to a code sample (MapSeries_LayoutManager_Pro24 - Overview) and began to wonder how I could find more of them, so I went to the owners conent page and played with the filters.

What I found is that the code samples appear when you filter for "Apps", but there isn't a specific filter for them? This makes finding other code samples extremely challenging, since you have to scroll through a bunch of other apps. Just to make sure, I did click on every one of these options and nothing appeared.

I'm largely fine (not really, but it's already done, so.. Should have been tools or files) with code samples being considered an "App", but please at least make it its own item type under there.