[#12] tracing: Add gRPC middleware

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

rpc/client/client.go

@@ -1,6 +1,7 @@
 package client
 
 import (
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 )
@@ -24,5 +25,14 @@ func New(opts ...Option) *Client {
 		c.grpcDialOpts = append(c.grpcDialOpts, grpc.WithTransportCredentials(credentials.NewTLS(c.tlsCfg)))
 	}
 
+	c.grpcDialOpts = append(c.grpcDialOpts,
+		grpc.WithChainUnaryInterceptor(
+			tracing.NewGRPCUnaryClientInteceptor(),
+		),
+		grpc.WithChainStreamInterceptor(
+			tracing.NewGRPCStreamClientInterceptor(),
+		),
+	)
+
 	return &c
 }