Improve Test Coverage and Add HasWilaya and HasCommune traits

[n4ss1m]

• Refactor & Test Coverage:

  • Increased test coverage to 100%.
  • Replaced PHPUnit tests with PestPHP-based tests for better readability.

• New Features:

  • Introduced HasWilaya and HasCommune traits to simplify model associations with Wilayas and Communes.
  • Updated documentation (README.md) to include usage examples for new traits.

• Refactoring & Cleanup:

  • Moved Wilaya and Commune models into Models/ namespace.
  • Removed deprecated methods and improved type hinting.
  • Integrated spatie/laravel-package-tools for better package structure.

Breaking Changes

• Models have been moved to Models/ namespace, which may require updates in consuming applications.