deps/media-playback: enable CUDA HW decoder

[rjgtav]

Description

Enables FFmpeg's CUDA hardware decoder.

Motivation and Context

To save CPU while playing media files on Linux environments with a NVIDIA GPU.

How Has This Been Tested?

Tested on a n1-standard machine on Google Cloud Platform with a T4 NVIDIA GPU, on Debian 11, by looping a video of Big Buck Bunny while monitoring the GPU usage using nvidia-smi

Types of changes

• Performance enhancement (non-breaking change which improves efficiency)

Checklist:

• [X] My code has been run through clang-format.
• [X] I have read the contributing document.
• [X] My code is not on the master branch.
• [X] The code has been tested.
• [X] All commit messages are properly formatted and commits squashed where appropriate.
• [X] I have included updates to all appropriate documentation.