Add missing endpoints for activation, deletion, tags, carriers, and order info

[0ln]

Describe what the PR does:

• Adds new Profile methods: activate_package, delete_package, set_tag_type, set_carrier, track_info_by_id, order_info_by_id, save_order_info.
• Adds fixtures/tests for new endpoints, including error/empty cases, and encryption utilities (to achieve 100% coverage).
• Updates README usage examples for the new methods.
• Tests: script/test (34 passed, 99% coverage 35 passed, 100% coverage).

Does this fix a specific issue?

N/A

Checklist:

• Confirm that one or more new tests are written for the new functionality.
• Run tests and ensure everything passes (with 100% test coverage).
• Update README.md with any new documentation.
• Add yourself to AUTHORS.md.

[gemini-code-assist]

Summary of Changes

Hello @0ln, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the package management capabilities of the API by integrating new endpoints for activating, deleting, and modifying package details. It also provides functionality to retrieve and update order-specific information, making the system more robust and feature-rich for users managing their tracked items.

Highlights

• New Profile Methods: Introduced several new asynchronous methods to the Profile class, including activate_package, delete_package, set_tag_type, set_carrier, track_info_by_id, order_info_by_id, and save_order_info.
• Comprehensive Testing: Added new test fixtures and extensive unit tests for all new endpoints, covering successful operations, handling of non-existent packages, and various error/empty response scenarios.
• Documentation Update: Updated the README.md file with clear usage examples for the newly implemented package management methods.

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[gemini-code-assist]

Code Review

This pull request effectively adds several new endpoints for package management, including activation, deletion, and order information handling. The changes are comprehensive, with new tests for each endpoint and updated documentation. My review includes suggestions to improve code maintainability by reducing duplication in both the core logic and the test suite, and a minor refactoring for more idiomatic Python.