TASK: Add JSON serialization/deserialization of a `Person`

[TheGittyPerson]

Leave a comment if you want to work on this task!

Difficulty: Intermediate to Upper Intermediate

This task is an extension of task #141. You can wait for that one to be completed and merged first, or take/help complete the task.

TODO:

• Add a to_json() method to the Person class. Use the methods from TASK: Implement Person serialization to a dictionary #141 in your implementation.
• If whoever completed task 141 did not write a dictionary deserialization method, you don't have to write a JSON deserializer method either. Otherwise, make sure you makefrom_json() a classmethod.
• Remember to add type hints and docstrings where necessary and follow PEP 8

PR steps:

1. Fork this repo
2. Clone the forked repo
3. Create a new branch and name it feat/person-json-serialization
4. Push commits to your remote fork
5. Create a PR titled TASK: Add JSON serialization/deserialization of a `Person` (#142)
6. At the end of the PR description, add Closes #142
7. Submit the PR (Ensure you allow maintainers to edit)

Please make sure you have read the Contributing Guidelines before working.

---

Feel free to ask any questions here!

If you are interested in working on this task,
please leave a comment requesting assignment to explicitly let others know the task is taken and prevent duplicate PRs.