Add more tests #2200

Job	Run time
Lint macOS 64bit	3m 29s
Lint iOS 32bit	1m 26s
Lint GNUStep + exceptions	2m 36s
Lint header-translator	45s
Lint test-assembly	28s
Check formatting	13s
Check MSRV	1m 45s
Test macOS 12	6m 23s
Compiler UI	2m 10s
Assembly tests	1m 12s
Test Compiler-RT	27s
${{ matrix.name }}	0s
Check icrate features	0s
Verify header translator output	1m 5s
Test GNUStep with libobjc2 v1.9	2m 51s
Test GNUStep with libobjc2 v2.0	3m 15s
Test GNUStep with libobjc2 v2.1 on nightly	3m 56s
Test GNUStep 32bit	3m 6s
Test on iOS simulator w. dinghy	0s
	35m 7s

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