Improve test coverage calculation #665

Job	Run time
Build Project Integration on Xcode 15	2m 53s
Build Project Integration on Xcode 15	2m 53s
Build Package Integration on Xcode 15	1m 28s
Build Package Integration on Xcode 15	1m 28s
Build and Test on Linux	4m 47s
Build and Test on Linux	5m 54s
Lint Swift	1m 9s
Lint Swift	1m 9s
Check Markdown links	16s
Check Markdown links	16s
Build and Test on Xcode 15	3m 14s
Build and Test on Xcode 15	3m 17s
Build Multi Project Integration on Xcode 15	3m 55s
Build Multi Project Integration on Xcode 15	3m 55s
Build with xcodebuild on Xcode 15 (generic/platform=ios)	3m 54s
Build with xcodebuild on Xcode 15 (generic/platform=ios)	4m 2s
Build with xcodebuild on Xcode 15 (platform=macos)	1s
Build with xcodebuild on Xcode 15 (platform=macos)	3m 41s
Build with xcodebuild on Xcode 15 (generic/platform=tvos)	1m 27s
Build with xcodebuild on Xcode 15 (generic/platform=tvos)	4m 20s
Build with xcodebuild on Xcode 15 (generic/platform=watchos)	1m 0s
Build with xcodebuild on Xcode 15 (generic/platform=watchos)	8m 4s
Build with xcodebuild on Xcode 15 (generic/platform=visionos)	1m 22s
Build with xcodebuild on Xcode 15 (generic/platform=visionos)	4m 47s
	1h 9m 12s

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