Implement Synchronous Client Class

We need to implement the Client class, which will handle synchronous operations and inherit from the previously created BaseClient abstract class. This class will define the synchronous interface for interacting with our service or API.

Key tasks include:

Implement the Client class as a subclass of BaseClient.
Define all required methods and properties in the Client class based on the abstract methods from BaseClient.
Write unit tests to ensure the Client class functions correctly.

Future Considerations: The Client class should be designed in a way that allows for easy extension, especially with mixins for Pandas and Polars support in the future.

Resources: BaseClient Issue

vsheliavsky / gie_v2

Implement Synchronous Client Class #4