Adding debugDescription to SelectionSets #1242

Job	Run time
changes	6s
Codegen Test Configurations - macOS	5m 24s
Cocoapods Integration Tests - macOS	13s
Run swift build for SPM packages (apollo-ios)	30s
Run swift build for SPM packages (apollo-ios-codegen)	53s
Run swift build for SPM packages (apollo-ios-pagination)	37s
Run Tuist Generation	1m 4s
Verify Frontend Bundle Latest - macOS	0s
Verify CLI Binary Archive - macOS	0s
Apollo Integration Tests - macOS	3m 44s
Apollo Unit Tests - macOS	2m 30s
Codegen CLI Unit Tests - macOS	9s
Codegen Lib Unit Tests - macOS	27s
ApolloPagination Unit Tests - macOS	2m 7s
	17m 44s

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