[Feature Request] LUFS Loudness Characteristics

[MironVeryanskiy]

This feature request is to enable LUFS (Loudness Units Relative to Full Scale) metrics into Friture.
https://en.wikipedia.org/wiki/LUFS (also referred to as LKFS)

After recently learning that different web platforms will auto-normalize audio to their own pre-selected LUFS points, I am interested in sanity-checking for this behavior across my audio sources.

src: https://moises.ai/blog/tips/lufs-loudness/

src: https://www.masteringthemix.com/blogs/learn/76296773-mastering-audio-for-soundcloud-itunes-spotify-and-youtube

Uncertain about image attribution - multiple blogs reuse the same graphic when querying "lufs for streaming platforms 2024" in a search engine.