Please update the C++ sample

[KingerFzb]

there is few sample about c++ just only crop and resize. I want to know how to use cvcuda to draw rect , draw text in c++, I know about the function like bndbox, binboxesi, but I don't know how to use it.

[milesp-nvidia]

Thank you @KingerFzb for bring this to our attention. We have Unit Tests in C++ that show great coverage in how to use CV-CUDA operators.

Are there specific use cases where you'd like to see sample apps?