net-p2p/tremotesf: add new port

Tremotesf is yet another, but modern (first-released in 2016) cross-platfom GUI
for Transmission daemon written in C++ and Qt.

Features include, but not necessarily limited to:

• View torrent list
• Sort torrents
• Filter torrents by name, status and trackers
• Start/stop/verify/remove torrents with multi-selection
• Add torrents from torrent files and magnet links
• Select which files to download when adding torrent
• Manage torrent files
• Add and remove torrent trackers
• View torrent peers
• Set torrent limits
• Change remote server settings
• View server statistics
• Multiple servers
• Supports HTTPS connection
• Can connect to servers with self-signed certificates (you need to add certificate to server settings)
• Client certificate authentication

WWW: https://github.com/equeim/tremotesf2/

PR: 274236