basilisp-lang / basilisp / 26486454446

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Native LazySeq implementation with PyO3 (#1338)

Implement the types of `basilisp.lang.seq` as native types using
[PyO3](https://pyo3.rs/v0.28.3/).

I realized after trying to profile a `clojure-test-suite` run that the
most significant bottlenecks were `basilisp.lang.seq.LazySeq` and the
iterator type provided for ISeq types via
`basilisp.lang.interfaces.ISeq`. Reimplementing those types in Rust
provided a significant speedup across test runs.

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