Add command for saving bundle file locally #4862

Job	Run time
lighthouse (18)	7m 37s
pwa-kit (16, 8)	3m 43s
generated (retail-react-app-test-project)	5m 46s
pwa-kit (16, 9)	3m 44s
generated-windows (retail-react-app-test-project)	7m 34s
generated-windows (retail-react-app-demo)	8m 32s
pwa-kit (18, 8)	3m 46s
generated (retail-react-app-demo)	6m 8s
pwa-kit-windows (16, 8)	3m 57s
generated (express-minimal-test-project)	4m 20s
generated-windows (express-minimal-test-project)	5m 42s
pwa-kit (18, 9)	4m 20s
pwa-kit-windows (16, 9)	4m 32s
generated (typescript-minimal-test-project)	4m 6s
generated-windows (typescript-minimal-test-project)	5m 41s
pwa-kit (18, 10)	3m 43s
pwa-kit-windows (18, 8)	4m 11s
pwa-kit (20, 8)	3m 29s
pwa-kit-windows (18, 9)	3m 58s
pwa-kit (20, 9)	3m 34s
pwa-kit-windows (18, 10)	3m 56s
pwa-kit (20, 10)	3m 34s
pwa-kit-windows (20, 8)	4m 6s
pwa-kit-windows (20, 9)	3m 55s
pwa-kit-windows (20, 10)	4m 4s
	1h 57m 58s

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