net-im/dino: update to 0.5.1

• Change build system from cmake to meson
• Remove libsignal-protocol-c
• Add libomemo-c
• Rename plugins, all plugins now have a plugin-* prefix
• Regenerate pkg-plist
• Update libsoup, and libwebrtc-audio-processing dependencies[1]

PR: 291721

Co-authored-by: Ashish SHUKLA <ashish@FreeBSD.org> [1]