More refactoring for examples #2140

Job	Run time
Check formatting	13s
Check MSRV	2m 1s
Lint macOS 64bit	5m 34s
Lint iOS 32bit	1m 27s
Lint GNUStep + exceptions	2m 24s
Lint header-translator	1m 35s
Lint test-assembly	1m 14s
Test macOS 12	7m 17s
Compiler UI	1m 37s
Assembly tests	1m 5s
Verify header translator output	1m 9s
Check icrate features	0s
${{ matrix.name }}	0s
Test Compiler-RT	23s
Test GNUStep with libobjc2 v1.9	3m 13s
Test GNUStep with libobjc2 v2.0	3m 35s
Test GNUStep with libobjc2 v2.1 on nightly	3m 20s
Test GNUStep 32bit	2m 48s
Test on iOS simulator w. dinghy	0s
	38m 55s

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