Manual block encodings #2930

Job	Run time
Check formatting	9s
Lint macOS 64bit	2m 46s
Check MSRV	2m 50s
Lint iOS 32bit	2m 14s
Lint GNUStep + exceptions	1m 31s
Lint header-translator	32s
Lint test-assembly	27s
Test macOS 12	45s
Assembly tests	46s
Check framework features	0s
${{ matrix.name }}	0s
Verify header translator output	1m 20s
Test Compiler-RT	22s
Test GNUStep with libobjc2 v1.9	57s
Compiler UI	1m 34s
Test GNUStep with libobjc2 v2.0	1m 14s
Test on iOS simulator w. dinghy	0s
Test GNUStep with libobjc2 v2.1 on nightly	1m 3s
Test GNUStep 32bit	1m 8s
	19m 38s

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