[PATCH 0/5] MR6200: org.freedesktop.Notifications implementation for balloons

[Cherser-s (＠Cherser-s)]

Adds the notification balloons implementation based on org.freedesktop.Notifications interface usage, if it's available. This is a split version of https://gitlab.winehq.org/wine/wine/-/merge_requests/2808 , because currently there is no documented way to maintain a single connection for a whole system tray with multiple StatusNotifierItems.