feat: Support --esm flag #657

Job	Run time
test	1m 15s
build-windows-bundle	5m 21s
build-mac-bundle	2m 1s
bundle-test-proxy (Win11)	1m 50s
bundle-test-proxy (macOS13)	1m 16s
bundle-test (Win10, Chrome)	1m 15s
bundle-test-with-sc (Win10, Chrome)	1m 48s
bundle-test (Win10, Firefox)	1m 32s
bundle-test-with-sc (Win10, Firefox)	1m 56s
bundle-test-with-sc (Win11, Chrome)	2m 4s
bundle-test (Win11, Chrome)	1m 16s
bundle-test-with-sc (Win11, Firefox)	1m 53s
bundle-test (Win11, Firefox)	1m 30s
bundle-test-with-sc (macOS11, Chrome)	1m 37s
bundle-test (macOS11, Chrome)	54s
bundle-test-with-sc (macOS11, Firefox)	1m 31s
bundle-test (macOS11, Firefox)	1m 8s
bundle-test-with-sc (macOS11, Safari)	1m 35s
bundle-test (macOS11, Safari)	1m 7s
bundle-test-with-sc (macOS12, Chrome)	1m 31s
bundle-test (macOS12, Chrome)	54s
bundle-test-with-sc (macOS12, Firefox)	1m 30s
bundle-test (macOS12, Firefox)	1m 10s
bundle-test-with-sc (macOS12, Safari)	1m 32s
bundle-test (macOS12, Safari)	59s
bundle-test-with-sc (macOS13, Chrome)	1m 34s
bundle-test (macOS13, Chrome)	1m 12s
bundle-test-with-sc (macOS13, Firefox)	1m 32s
bundle-test (macOS13, Firefox)	1m 10s
bundle-test-with-sc (macOS13, Safari)	1m 34s
bundle-test (macOS13, Safari)	1m 11s
bundle-test-with-sc (iPhone14, Safari)	2m 41s
bundle-test (iPhone14, Safari)	2m 15s
bundle-test-with-sc (iPhone12, Safari)	2m 21s
bundle-test (iPhone12, Safari)	1m 48s
	57m 43s

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