docs: add apollo rust client

docs/en/usage/third-party-sdks-user-guide.md

@@ -141,3 +141,11 @@ Project address: [apollo-sdk-clientd](https://github.com/fengzhibin/apollo-sdk-c
 Project address: [apollo-c-client](https://github.com/lzeqian/apollo)
 
 > Thanks [@lzeqian](https://github.com/lzeqian) for providing support for the C Apollo client
+
+## 6. Rust
+
+### Apollo Rust client
+
+Project address: [apollo-rust-sdk](https://github.com/liushv0/apollo-rust-sdk)
+
+> Thanks [@liushv0](https://github.com/liushv0) for providing support for the Rust Apollo client

docs/zh/usage/third-party-sdks-user-guide.md

@@ -125,3 +125,10 @@
 项目地址：[apollo-c-client](https://github.com/lzeqian/apollo)
 
 > 非常感谢[@lzeqian](https://github.com/lzeqian)提供C Apollo客户端的支持
+
+## 6. Rust
+
+### Apollo Rust 客户端
+项目地址：[apollo-rust-sdk](https://github.com/liushv0/apollo-rust-sdk)
+
+> 非常感谢[@liushv0](https://github.com/liushv0)提供Rust Apollo客户端的支持