Don't quit when closing the main window
Epic: https://source.puri.sm/Librem5/use-cases/issues/1, https://source.puri.sm/Librem5/use-cases/issues/95
Calls should stay active and receive incoming calls, even when the main window is closed.
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Epic: https://source.puri.sm/Librem5/use-cases/issues/1, https://source.puri.sm/Librem5/use-cases/issues/95
Calls should stay active and receive incoming calls, even when the main window is closed.