Flexible grant support #730

Job	Run time
Test on iOS using Xcode 16.1	3m 51s
Test on macOS using Xcode 16.1	2m 21s
Lint code with SwiftLint	13s
Test Swift package using Xcode 16.1	2m 32s
Test on tvOS using Xcode 16.1	3m 33s
Lint podspec using Xcode 16.1	2m 6s
	14m 36s

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