3.0.0-beta1

chore: Update phpunit.xml.dist for PHPUnit 11+
test: Repair unit test setup
chore: Add missing entries to .gitignore
style: Apply php-cs-fixer
Development mode for Image-3.0.0alpha6
Released Image-3.0.0alpha5
Update metadata and workflows for PHP 8 support
Add CI job for satis repo update
no errors, ci.yml added, bootstrap.php adapted
no errors left
Development mode for Image-3.0.0alpha6