Add documentation for --menu up option and COMPOSE_MENU environemnt v… #690

Job	Run time
bin-image	13m 10s
Build and test (desktop-windows, plugin)	6m 45s
Build and test (desktop-macos, plugin)	3m 51s
Build and test (desktop-m1, plugin)	3m 10s
desktop-edge-test	2s
	26m 58s

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