www/youtube_dl: Deprecate and set expiration date to 2024-03-31

Many extractors are broken and upstream moves at a very slow pace
Deprecate port and redirect users to www/yt-dlp

Discussed with riggs@ via private mail

www/youtube_dl/Makefile

@@ -11,6 +11,9 @@ WWW=		https://yt-dl.org/
 LICENSE=	UNLICENSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+DEPRECATED=	Many extractors are brokena and upstream can't keep up, consider using www/yt-dlp
+EXPIRATION_DATE=2024-03-31
+
 BUILD_DEPENDS=	pandoc:textproc/hs-pandoc
 
 USES=		gmake python