Are you using microsoft visual studio as IDE?
Yup, overly complicated bloated #@%%&! that it is but yes.
I’ve no idea how it happened or how I fixed it, basically I just trashed everything I was doing with C++ related and rebuilt and finally I got a folder that states it has C++ code in in it in the root of my project directory, which I didn’t have before seems promising maybe?
I’ll have a look at Rider.