pynumaflow_lite - a lighter and complete Python SDK powered by Rust SDK

[vigith]

Summary

pynumaflow is a pure Python implementation, we should also provide a more lightweight and complete Python SDK implemented on top of our Rust SDK. Implemented complex features like Session Window in Python is error-prone and not very performant. We aim to stop with gap through pynumaflow_lite.

We will not yank the support for pynumaflow rather both pynumaflow and pynumaflow_lite will coexist.

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Message from the maintainers:

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