There are two apps both work for me in scoop extras bucket.
scoop bucket add extras scoop install rbtray traymond
They both require running their background process first. Rbtray minimizes a window into system tray by right clicking the window minimization button, while traymond us shortcuts Win + Shift + Z。
Rbtray has no its own system tray icon. Minimize a window and right click it to quit rbtray. Traymond has its own tray icon, use it to exit or restore all windows.