* Add support for h264_nvv4l2
A new implementation of nvv4l2 decoder has been made by @CTCaer and will be released in thr next switchroot (Linux for Nintendo Switch) update. This implementation of ffmpeg can also be used by other Jetson boards. A repository will be soon hosted so Jetson users can install it.
Prior to the new implementation distribution, we add it to the project who currently use nvmpi implementation.
* Add support for hevc_nvv4l2
Following previous PR, add hevc support as well.