Add header support to http2 transport

transport/internet/http/config.proto

@@ -6,7 +6,11 @@ option go_package = "github.com/v2fly/v2ray-core/v4/transport/internet/http";
 option java_package = "com.v2ray.core.transport.internet.http";
 option java_multiple_files = true;
 
+import "transport/internet/headers/http/config.proto";
+
 message Config {
   repeated string host = 1;
   string path = 2;
+
+  repeated v2ray.core.transport.internet.headers.http.Header header = 4;
 }