multimedia/dovi_tool: Tool combining multiple utilities for working with Dolby Vision

dovi_tool provides an important set of tools for
analyzing, editing and generating Dolby Vision metadata.

Extract, inject and edit RPU of movie files.
Mux and demux the enhancement layer of HEVC files.
Convert the RPU, optionally dropping the enhancement layer.

WWW: https://github.com/quietvoid/dovi_tool

PR: 281939