audio/baresip: Update 4.1.0 => 4.2.0, flavorize, take maintainership
Changelog:
https://github.com/baresip/baresip/releases/tag/v4.2.0
Improve port:
- Add JACK audio backend option.
- Fix Gstreamer audio backend.
- Introduce flavors:
- nox11 - minimal console-only build for voice calls;
- default - full build with X11 and video support.
- Replace BUILD_DEPENDS+RUN_DEPENDS from audio/re to LIB_DEPENDS.
- Sort PORTDOCS.
- Small formatting improvements.
PR: 290307
Approved by: Herbert J. Skuhra <herbert@gojira.at> (former maintainer)
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>
MFH: 2025Q4
(cherry picked from commit c76e8bd1807e910961ae276f6f5d0227f12cdb7b)