feat grpc: write meta_type and set log level in client logs

feat grpc: “meta-type” tag added to client middleware log

Тесты: протестировано локально и в СИ.

Relates: <https://st.yandex-team.ru/>
commit_hash:de1a2f63827774510961b3a4b3d7d423bf14ea09

grpc/src/ugrpc/client/middlewares/log/middleware.cpp

@@ -54,6 +54,11 @@ class SpanLogger {
 Middleware::Middleware(const Settings& settings) : settings_(settings) {}
 
 void Middleware::PreStartCall(MiddlewareCallContext& context) const {
+ auto& span = context.GetSpan();
+ span.SetLocalLogLevel(settings_.log_level);
+
+ span.AddTag("meta_type", std::string{context.GetCallName()});
+
  if (!IsSingleRequest(context.GetCallKind())) {
  SpanLogger{context.GetSpan(), settings_.log_level}.Log(
  "gRPC request stream started",