This commit reorganizes the imports in the `api_router.py` file to group related endpoints together. This improves code readability and maintainability.
This commit adds support for creating pets in the API. It includes the following changes:
- Added a new endpoint in the `api_router.py` file to handle pet creation
- Added a new model `Pet` in the `models.py` file to represent a pet
- Added a new request schema `PetCreateRequest` in the `requests.py` file to validate pet creation requests
- Added a new response schema `PetResponse` in the `responses.py` file to represent a pet response
These changes allow users to create pets and retrieve information about them.