Thank you for considering contributing to this project. It means that you not only find it useful, but that you think there's something that could be done to make it more useful, or useful to more people. Suggestions are welcome, but not all requests can or will be implemented.
The vision of this project is to be pure Gnome, targetting recent versions of Gnome Shell (currently 3.24+), taking advantage of stock resources and generally conforming to the Gnome Shell Design Principles and Gnome Human Interface Guidelines.
With regard to the KDE Connect protocol, the goal is to be compatible with upstream KDE Connect, especially the current version of the Android app.
All code should be written in GJS if at all possible and must not be written in compiled languages that are architecture dependent. Essentially, it should be ready as soon as it's unpacked from the extension ZIP file.
The best way to get in touch is by opening a new issue.