multimedia/jellyfin: Add port
Jellyfin is the volunteer-built media solution that
puts you in control of your media.
Stream to any device from your own server, with no strings attached.
Your media, your server, your way.
Maintainer becomes submitter. Already maintainer of other ports.
Port installs binaries downloaded from a website without any
local compilation. The submitter has done the same for numerous
previous ports due to difficulties in locally building .NET based
ports. See PR for some discussion.
PR: 269754
Approved by: flo (mentor)
Differential Revision: https://reviews.freebsd.org/D38861