Improve PHP analysis - 9 security rules, PHPDoc, Type Hints

The PHP analysis now:

• detects 9 additional security problems related to XXE, CORS, Session Management, CSRF: https://community.sonarsource.com/t/the-php-security-engine-detects-9-additional-security-problems-related-to-xxe-cors-session-management-csrf-and-more/37986
• read PHPDoc and Type Hints metadata and uses them in the Security Engine:
  • https://community.sonarsource.com/t/the-php-security-engine-uses-phpdoc-to-find-more-vulnerabilities/37247
  • https://community.sonarsource.com/t/the-php-security-engine-uses-type-hints-to-find-more-vulnerabilities/33993