macos: cmd + q should close the window not quit the app.

[olizilla]

IPFS Desktop wants to help you keep your IPFS daemon running. Looking at other vaguely similar apps, they follow the pattern of running in the menubar, and cmd + q causes the open window to close, but does not quit the app. It continues to run in the menubar

Apps i've tested which do this

• Docker Desktop - closes the window, keeps docker in menubar, keeps docker daemon running
• Postgres.app - closes the window, keeps postgress in menubar, leaves postgres running.
• Keybase - closes window, keeps keybase in menubar