[Sprint] Change pydantic to dataclass

[Only-bottle]

Description

• Change the pydantic that defined the API schema to a dataclass.

Checklists

• [ ] I would create a corresponding branch for this issue from the designated (mostly develop) branch.
• [x] This issue only contains a preceding agreement between project owners.

[Only-bottle]

cc. @illian01 ❤️‍🔥

[paran3]

Hello @Only-bottle. I’ve updated the auth client v2 to use dataclasses instead of pydantic as we decided for PyNetspresso. Let me know if you have any feedback.

cc. @soyoungKo

[Only-bottle]

This issue has been resolved, so we're closing it.