Refactor menu and add 'New Session' options #424

Job	Run time
Build & test (linux, arm64, ubuntu-24.04-arm)	6m 32s
Build & test (windows, x64, windows-2019)	6m 0s
Build & test (mac, x64, macos-13)	5m 26s
Build & test (mac, arm64, macos-14)	3m 15s
Build & test (linux, x64, ubuntu-22.04)	5m 35s
Submit to WinGet repository	0s
Publish a release	-1s
	26m 47s

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