* Support TYPO3 v12.0
All dependencies are compatible now.
We can update to support v12.0.
This commit will shift TYPO3 support from 10 and 11 to 11 and 12.
See Changelog entry.
Update dev dependencies to our latest best practice.
Auto migrate code base to follow CGL and use PHP 7.4.
This allows configuration via PHP.
It also combines code sniffer and php cs fixer.
Used commands:
composer remove --dev squizlabs/php_codesniffer
composer req --dev symplify/easy-coding-standard
./vendor/bin/ecs --fix
