Add the AudioToolbox framework #3192

Job	Run time
Check formatting	10s
Check MSRV	51s
Lint macOS x86_64	2m 58s
Lint iOS ARMv7s	3m 1s
Lint visionOS Aarch64 simulator	2m 50s
Lint GNUStep + exceptions	1m 33s
Lint header-translator	28s
Lint test-assembly	26s
Test macOS 15 Aarch64	1m 30s
Assembly tests	51s
Compiler UI	46s
Verify header translator output	1m 38s
Check framework features	0s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Test Compiler-RT	36s
Test GNUStep with libobjc2 v1.9	1m 10s
Test GNUStep with libobjc2 v2.0	1m 2s
Test on iOS simulator w. dinghy	0s
Test GNUStep with libobjc2 v2.1 on nightly	1m 30s
Test GNUStep 32bit	1m 8s
	22m 28s

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