build(vnt-core): 使用 vendored protoc,不再依赖系统安装

vnt-core/Cargo.toml

@@ -55,3 +55,4 @@ widestring = "1.2"
 
 [build-dependencies]
 prost-build = "0.14"
+protoc-bin-vendored = "3"

vnt-core/build.rs

@@ -1,6 +1,13 @@
 fn main() {
+    let protoc_path = protoc_bin_vendored::protoc_bin_path()
+        .expect("failed to find vendored protoc");
+
     let mut config = prost_build::Config::new();
+
+    config.protoc_executable(protoc_path);
+
     config.protoc_arg("--experimental_allow_proto3_optional");
+
     config
         .compile_protos(
             &[
@@ -12,4 +19,4 @@ fn main() {
             &["proto"],
         )
         .unwrap();
-}
+}