adapt to sglang v0.5.2rc1 on dcu

sgl-router/build.rs

@@ -0,0 +1,35 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Only regenerate if the proto file changes
+    println!("cargo:rerun-if-changed=src/proto/sglang_scheduler.proto");
+
+    // Configure protobuf compilation with custom settings
+    let config = prost_build::Config::new();
+
+    // Skip serde for types that use prost_types::Struct
+    // These cause conflicts and we don't need serde for all generated types
+
+    // Configure tonic-build for gRPC code generation
+    tonic_build::configure()
+        // Generate both client and server code
+        .build_server(true)
+        .build_client(true)
+        // Add a module-level attribute for documentation and clippy warnings
+        .server_mod_attribute(
+            "sglang.grpc.scheduler",
+            "#[allow(unused, clippy::mixed_attributes_style)]",
+        )
+        .client_mod_attribute(
+            "sglang.grpc.scheduler",
+            "#[allow(unused, clippy::mixed_attributes_style)]",
+        )
+        // Compile the proto file with the custom config
+        .compile_protos_with_config(
+            config,
+            &["src/proto/sglang_scheduler.proto"],
+            &["src/proto"],
+        )?;
+
+    println!("cargo:warning=Protobuf compilation completed successfully");
+
+    Ok(())
+}