Merge pull request #177 from tronprotocol/feature/support-london

feat(vm): support london

Author: yanghang8612

core/Tron.proto

@@ -405,6 +405,7 @@ message Transaction {
       JVM_STACK_OVER_FLOW = 12;
       UNKNOWN = 13;
       TRANSFER_FAILED = 14;
+      INVALID_CODE = 15;
     }
     int64 fee = 1;
     code ret = 2;