Add the ColorSync framework #3318

Job	Run time
Check MSRV	59s
Check formatting	15s
Lint macOS x86_64	3m 30s
Lint iOS ARMv7s	3m 37s
Lint visionOS Aarch64 simulator	3m 23s
Lint GNUStep + exceptions	1m 25s
Lint header-translator	35s
Lint test-assembly	33s
Test macOS 15 Aarch64	1m 27s
Assembly tests	54s
Verify header translator output	2m 1s
Test Compiler-RT	32s
Test GNUStep with libobjc2 v1.9	1m 4s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Test GNUStep with libobjc2 v2.0	1m 11s
Check framework features	0s
Test GNUStep with libobjc2 v2.1 on nightly	2m 22s
Test GNUStep 32bit	1m 32s
Test on iOS simulator w. dinghy	0s
Compiler UI	47s
	26m 7s

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