Distribution handoff for this FFmpeg component

Include these notices, COPYING.LGPLv2.1, LICENSE.md, CREDITS, unchanged IJG files,
matching source archive/signature/key, source-verification, empty changes.diff,
BUILD.json, AUDIT.json and build instructions with the executable distribution.
When providing public application downloads, publish the matching FFmpeg source
and build information alongside them and identify FFmpeg/LGPL in About/EULA/
download-page notices. Preserve third-party rights and review application
integrity/re-signing instructions for a recipient's rebuilt CLI. This repository
preparation does not publish a source server or supply final commercial terms.

Review https://ffmpeg.org/legal.html before distribution. Mechanical flag and
library checks do not resolve all patent/codec-royalty or contractual questions.
The build excludes H.264 encoders and GPL/nonfree/version3 components; H.264
copy/decoding is not a blanket conclusion about patent licensing obligations.