Improve test coverage calculation #661

Job	Run time
Build Package Integration on Xcode 15	1m 26s
Build Package Integration on Xcode 15	1m 26s
Build and Test on Linux	6m 3s
Build and Test on Linux	6m 3s
Lint Swift	1m 15s
Lint Swift	1m 15s
Check Markdown links	17s
Check Markdown links	17s
Build and Test on Xcode 15	2m 32s
Build and Test on Xcode 15	3m 24s
Build Project Integration on Xcode 15	1m 8s
Build Project Integration on Xcode 15	18s
Build Multi Project Integration on Xcode 15	2m 41s
Build Multi Project Integration on Xcode 15	20s
Build with xcodebuild on Xcode 15 (generic/platform=ios)	1m 5s
Build with xcodebuild on Xcode 15 (generic/platform=ios)	4m 8s
Build with xcodebuild on Xcode 15 (platform=macos)	1s
Build with xcodebuild on Xcode 15 (platform=macos)	2m 59s
Build with xcodebuild on Xcode 15 (generic/platform=tvos)	1s
Build with xcodebuild on Xcode 15 (generic/platform=tvos)	4m 32s
Build with xcodebuild on Xcode 15 (generic/platform=watchos)	1s
Build with xcodebuild on Xcode 15 (generic/platform=watchos)	7m 45s
Build with xcodebuild on Xcode 15 (generic/platform=visionos)	1s
Build with xcodebuild on Xcode 15 (generic/platform=visionos)	4m 16s
	53m 14s

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