chore: checkpoint before Python removal

vendor/anstyle/README.md

@@ -0,0 +1,42 @@
+# anstyle
+
+> ANSI text styling
+
+*A portmanteau of "ansi style"*
+
+[![Documentation](https://img.shields.io/badge/docs-master-blue.svg)][Documentation]
+![License](https://img.shields.io/crates/l/anstyle.svg)
+[![Crates Status](https://img.shields.io/crates/v/anstyle.svg)](https://crates.io/crates/anstyle)
+
+`anstyle` provides core types describing [ANSI styling escape
+codes](https://en.wikipedia.org/wiki/ANSI_escape_code) for interoperability
+between crates.  For example, this would allow a crate to provide an API for
+customizing the colors used without putting the underlying text styling crate
+in the API.
+
+For integration with your text styling crate, see:
+- [anstyle-termcolor](crates/termcolor)
+- [anstyle-owo-colors](crates/owo)
+- [anstyle-yansi](crates/yansi)
+
+General utilities:
+- [anstyle-git](crates/git): Parse Git style descriptions
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <https://www.apache.org/licenses/LICENSE-2.0>)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or <https://opensource.org/license/mit>)
+
+at your option.
+
+## [Contribute](../../CONTRIBUTING.md)
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual-licensed as above, without any additional terms or
+conditions.
+
+[Crates.io]: https://crates.io/crates/anstyle
+[Documentation]: https://docs.rs/anstyle