This plugin enables Evolution to hide in system tray.
Tested on: ALT Linux Workstation K 10.1 (x86_64)
Based on Serghei Amelian (@serghei) evolution-systray project. Previous version used XApp to create tray icon, but in KDE Plasma environment the icon displayed incorrectly (stretched, wrong size). Current version uses KDE StatusNotifier through wrapper library to resolve this issue.