chore(auth): add email otp mfa enums and types #3720

Job	Run time
test / test-dart-vm (3.3.0)	5m 0s
test / test-dart-vm (stable)	4m 40s
native_test / test-dart-native (macos-14)	3m 48s
ddc_test / test-dart-ddc (3.3.0, chrome)	4m 5s
dart2js_test / test-dart-2js (3.3.0, chrome)	4m 7s
native_test / test-dart-native (windows-latest)	5m 19s
ddc_test / test-dart-ddc (3.3.0, firefox)	3m 51s
dart2js_test / test-dart-2js (3.3.0, firefox)	4m 22s
ddc_test / test-dart-ddc (stable, chrome)	3m 35s
dart2js_test / test-dart-2js (stable, chrome)	4m 14s
ddc_test / test-dart-ddc (stable, firefox)	3m 52s
dart2js_test / test-dart-2js (stable, firefox)	4m 3s
	50m 56s

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