Injecting metadata into raw streams (for external players)

[YurikaL]

Is your feature request related to a problem? Please describe.
When opening Stash raw streams in external players, there is no metadata displayed. Just stream (last part of URL) instead of any name is displayed for each scene. Metadata is only displayed in the player if it's pre-embed in source file, but this is completely unrelated to Stash database. While #2747 is not implemented yet, it would be nice to at least view the scene name in external player.

Describe the solution you'd like
Maybe ICY-metadata standard could be implemented for injecting metadata headers to Stash streams?

Describe alternatives you've considered
Mounting AV directory on client to exactly the same path as than mounted on server that running Stash, and playing scenes via path instead of stream link. So at least source file name will be displayed in external player. But this method also is almost unrelated to Stash database and requires some extra preparation on client side.

Additional context
ICY Metadata description: https://gist.github.com/niko/2a1d7b2d109ebe7f7ca2f860c3505ef0#file-icy_meta-md