Add option to emit expand result to stdout #5993

Job	Run time
check-website	14s
build test linux x86-64	3m 12s
check-rust	3m 58s
build test windows x86-64	6m 13s
scarb-metadata compatibility check	49s
doc tests	3m 5s
test linux x86-64 1/8	6m 18s
test linux x86-64 2/8	8m 4s
test linux x86-64 3/8	8m 39s
test linux x86-64 4/8	6m 0s
test linux x86-64 5/8	5m 53s
test linux x86-64 6/8	4m 0s
test linux x86-64 7/8	4m 20s
test linux x86-64 8/8	3m 11s
test windows x86-64 1/8	6m 13s
test windows x86-64 2/8	8m 29s
test windows x86-64 3/8	8m 35s
test windows x86-64 4/8	6m 13s
test windows x86-64 5/8	6m 4s
test windows x86-64 6/8	4m 15s
test windows x86-64 7/8	4m 36s
test windows x86-64 8/8	3m 54s
	1h 52m 15s

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