Add the ExecutionPolicy framework #3431

Job	Run time
Check formatting	12s
Check MSRV	1m 6s
Lint macOS x86_64	4m 24s
Lint iOS ARMv7s	4m 35s
Lint visionOS Aarch64 simulator	4m 33s
Lint GNUStep + exceptions	2m 14s
Lint header-translator	42s
Lint test-assembly	34s
Test macOS 15 Aarch64	2m 4s
Assembly tests	56s
Verify header translator output	2m 54s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Check framework features	0s
Test Compiler-RT	34s
Test GNUStep with libobjc2 v1.9	3m 35s
Test GNUStep with libobjc2 v2.0	3m 14s
Test on iOS simulator w. dinghy	0s
Compiler UI	52s
Test GNUStep with libobjc2 v2.1 on nightly	3m 41s
Test GNUStep 32bit	2m 43s
	38m 53s

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