Add faer to math-scientific

[ariasanovsky]

faer is

a pure Rust implementation of low level linear algebra algorithms that leverages SIMD instructions, modern cache friendly algorithms and thread parallelism to achieve high performance.
-- Rust Scientific Computing 2023

• Journal of Open Source Software submission
• benchmarks against ndarray, nalgebra, eigen, etc are in the README.md
• interoperable with polars
• interoperable with ndarray and nalgebra

[djc]

With only 3k recent downloads (compared to 1.3M for ndarray and 1.7M for nalgebra), I think it is too early to add this crate to blessed.rs.