xk6

Refactor `new` command #6542

Job	Run time
test-xk6 (stable, ubuntu-latest)	1m 15s
test-xk6 (stable, windows-latest)	5m 43s
test-xk6 (stable, macos-latest)	1m 1s
test-xk6 (tip, ubuntu-latest)	1m 20s
test-xk6 (tip, windows-latest)	2m 18s
test-xk6 (tip, macos-latest)	1m 22s
	12m 59s

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