Simplify Import Paths

[Roman505050]

I suggest simplifying the import paths in the SDK to improve code readability and the overall developer experience. The current deep module nesting forces users to write verbose import statements that can be streamlined for better maintainability.

A potential improvement is to re-export frequently used classes at a higher module level. For example, in the kucoin_universal_sdk/generate/spot/market package, you could add an __init__.py file with the following content:

from .model_get_part_order_book_req import GetPartOrderBookReqBuilder

This change would allow users to import the class with a shorter path:

from kucoin_universal_sdk.generate.spot.market import GetPartOrderBookReqBuilder

Thank you for considering this enhancement!

[ISAAC-XXYYZZ]

Thanks for the feedback! This is a great suggestion, and we will include it in the next version update. Stay in touch!

[JUAN98253]

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