multimedia/onevpl: add new port

The oneAPI Video Processing Library (oneVPL) provides a single video
processing API for encode, decode, and video processing that works
across a wide range of accelerators.

This package contains the following components of oneVPL:

• Copies of the oneVPL Specification API header files
• oneVPL dispatcher
• Examples demonstrating API usage
• oneVPL command line tools

https://www.intel.com/content/www/us/en/developer/tools/oneapi/onevpl.html