v4.0.0

Added

• migration: Add strict types declaration and return type hints.
• Add menu export/import functionality and history model.
• docs: Restructure API documentation and add installation guide.
• Add option to include headers when exporting and importing data.

Changed

• pipeline: Update PHP version matrix from 8.2, 8.3 to 8.3, 8.4.
• docs: Update installation command to remove version constraint.
• composer: Add branch-alias, minimum-stability, and prefer-stable settings.
• pipeline: Update pipeline.yml to fix :package_name typo.

Removed

• Remove unused import file upload partial and test case.
• Remove Dependabot auto-merge workflow and related config files.
• Remove obsolete workflow files and create a new pipeline.

Fixed

• Update README with badges.
• Update PHPStan baseline.