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Chess engine: Frozenight 3.0.1 NNUE (Windows and Linux)

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Frozenight - NNUE chess engine written in Rust. 
Rating CEDR=2880

v.3.0.1:
This release fixes a crash when the GUI sends a castling move in Chess 960 mode with the king on the E file and the rook on either the C or G files. This release is otherwise identical to version 3.0.0.

The release binaries are categorized by microarchitecture levels. The general rule of thumb is:
x86-64-v3 will work on modern (2015+) CPUs (avx2, bmi1, lzcnt, etc.)
x86-64-v2 will work on older (2009+) CPUs (popcnt, sse4, etc.)
x86-64 will work on any x86_64 CPU.

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