Can someone please add Radiotray-NG to Flatpack?

Project information: Radiotray-NG

Name: Radiotray-NG
Homepage: Releases · ebruck/radiotray-ng · GitHub
License: GPL-3.0 License
Upstream has been contacted:

“This is a simple music streaming player that lives on the system tray.” Radiotray has been a lightweight linux program for years. When development was stopped, a successor, Radiotray-NG (New Generation) was created and is being developed. It would be great to have this classic back in repositories.