Restore `NetworkLogger`’s convenience initializer #1124

Job	Run time
Build Demo (tvOS)	48s
Build Integration Examples (iOS)	55s
Discover Typos	7s
Build Demo (iOS)	1m 46s
Unit Tests (iOS 17.4, Xcode 15.3)	8s
Unit Tests (macOS, Xcode 15.3)	55s
Swift Build (SPM)	22s
Unit Tests (tvOS 17.4, Xcode 15.3)	8s
Run Build (watchOS 9.2, Xcode 14.2)	5s
	5m 14s

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