Adiciona testes e mocks de verificação de endereço e casos extremos

[kevinrvb16]

This PR improves the test coverage for the Lob address verification API by introducing structured mock data and dynamic tests for both standard and edge case addresses.
Key Changes:

Created a mock model file (addresses.js) containing two arrays:
addresses: standard mock addresses for general testing.
addressEdgeCases: a comprehensive set of edge case addresses (e.g., satellites, non-residential, P.O. boxes, military, Puerto Rico, etc.) with expected results.
Updated the integration test (lob.test.js):
Imports both addresses and addressEdgeCases from the mock file.
Adds a new test suite that dynamically iterates over addressEdgeCases, asserting the API response matches the expected result for each edge case.
Adds a dynamic test for the basic addresses array to ensure all mock addresses are handled by the endpoint.
Ensures maintainability and scalability by centralizing mock data and making it easy to add new cases in the future.
Motivation:
This change ensures that all relevant address scenarios, including edge cases, are consistently tested. It also makes the test code cleaner and easier to extend as new requirements or edge cases arise.

How to test:
Run the test suite with npm test or npx jest and verify that all address verification scenarios pass as expected.

[github-actions]

Hello there, thanks for opening your first Pull Request. Someone will review it soon.