chore: checkpoint before Python removal

vendor/cmake/README.md

@@ -0,0 +1,32 @@
+# cmake
+
+[Documentation](https://docs.rs/cmake)
+
+A build dependency for running the `cmake` build tool to compile a native
+library.
+
+```toml
+# Cargo.toml
+[build-dependencies]
+cmake = "0.1"
+```
+
+The CMake executable is assumed to be `cmake` unless the `CMAKE`
+environmental variable is set.
+
+# License
+
+This project is 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/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in cmake by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.