Manual block encodings #3027

Job	Run time
Check MSRV	48s
Lint macOS 64bit	2m 40s
Check formatting	10s
Lint iOS 32bit	2m 7s
Lint GNUStep + exceptions	1m 24s
Lint header-translator	28s
Lint test-assembly	24s
Test macOS 12	3m 27s
Assembly tests	54s
Verify header translator output	1m 2s
Check framework features	0s
${{ matrix.name }}	0s
Test Compiler-RT	35s
Test GNUStep with libobjc2 v1.9	1m 13s
Test on iOS simulator w. dinghy	0s
Compiler UI	1m 52s
Test GNUStep with libobjc2 v2.0	1m 12s
Test GNUStep with libobjc2 v2.1 on nightly	56s
Test GNUStep 32bit	1m 29s
	20m 41s

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