build(ariadne): vendor serde crates

third_party/crates/zmij-1.0.23/README.md

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+# Żmij
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/zmij-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/zmij)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/zmij.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/zmij)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-zmij-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/zmij)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/zmij/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/zmij/actions?query=branch%3Amaster)
+
+Pure Rust implementation of Żmij, an algorithm to quickly convert floating point
+numbers to decimal strings.
+
+This Rust implementation is a line-by-line port of Victor Zverovich's
+implementation in C++, [https://github.com/vitaut/zmij][upstream].
+
+[upstream]: https://github.com/vitaut/zmij/tree/b32688a1849d1b8f092c1740c61a6b05ea4679ae
+
+## Example
+
+```rust
+fn main() {
+    let mut buffer = zmij::Buffer::new();
+    let printed = buffer.format(1.234);
+    assert_eq!(printed, "1.234");
+}
+```
+
+## Performance
+
+The [dtoa-benchmark] compares this library and other Rust floating point
+formatting implementations across a range of precisions. The vertical axis in
+this chart shows nanoseconds taken by a single execution of
+`zmij::Buffer::new().format_finite(value)` so a lower result indicates a faster
+library.
+
+[dtoa-benchmark]: https://github.com/dtolnay/dtoa-benchmark
+
+![performance](https://raw.githubusercontent.com/dtolnay/zmij/master/dtoa-benchmark.png)
+
+<br>
+
+#### License
+
+<a href="LICENSE-MIT">MIT license</a>.