Add autoloader regeneration guidance to scaffolded packages #233

Job	Run time
code-quality / PHPCS	21s
code-quality / Spell check	5s
code-quality / Lint Gherkin Feature files	14s
code-quality / Lint GitHub Actions workflows	8s
code-quality / Lint PHP files	15s
code-quality / PHPStan	21s
	1m 24s

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