chore: use php phpStan baseline

[sreichel]

Description (*)

https://phpstan.org/user-guide/baseline#php-baseline-format-instead-of-neon

[Copilot]

Pull request overview

This PR aligns OpenMage’s PHPStan configuration to use PHPStan’s PHP baseline format (instead of the previous NEON baseline references), ensuring CI and local tooling point to the correct baseline file format.

Changes:

• Update Composer script phpstan:baseline to generate/update .phpstan.dist.baseline.php.
• Update PHPStan config includes to load .phpstan.dist.baseline.php.
• Update CI workflow path filters and export-ignore rules to track the PHP baseline file.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated no comments.

File	Description
composer.json	Switch phpstan:baseline script to target .phpstan.dist.baseline.php.
.phpstan.dist.neon	Update baseline include to .phpstan.dist.baseline.php.
.github/workflows/workflow.yml	Update workflow path filters to include .phpstan.dist.baseline.php.
.gitattributes	Export-ignore now applies to .phpstan.dist.baseline.php instead of the NEON baseline.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud