Add the SpriteKit framework #3331

Job	Run time
Check formatting	11s
Check MSRV	58s
Lint macOS x86_64	3m 42s
Lint iOS ARMv7s	3m 40s
Lint visionOS Aarch64 simulator	3m 47s
Lint GNUStep + exceptions	1m 36s
Lint header-translator	35s
Lint test-assembly	30s
Test macOS 15 Aarch64	1m 34s
Compiler UI	45s
Assembly tests	53s
Verify header translator output	2m 20s
Check framework features	0s
Test Compiler-RT	33s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Test GNUStep with libobjc2 v1.9	1m 13s
Test on iOS simulator w. dinghy	0s
Test GNUStep with libobjc2 v2.0	1m 15s
Test GNUStep with libobjc2 v2.1 on nightly	1m 11s
Test GNUStep 32bit	1m 19s
	26m 2s

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