Calculating intersection-of-union (IoU) is a very common operation used by tensor-decoder handling tensors from vision models. Having this in a library will improve maintainability and ease of writing tensor-decoder. - Post-fix _uint: We might eventually want to handle different datatype that we woule post-fix with _type Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8805>