feature: optimize asset

1. add asset field

Author: forfreeday

core/Tron.proto

@@ -161,6 +161,8 @@ message Account {
   int64 old_tron_power = 46;
   Frozen tron_power = 47;
 
+  bool asset_optimized = 60;
+
   // this account create time
   int64 create_time = 0x09;
   // this last operation time, including transfer, voting and so on. //FIXME fix grammar
@@ -598,6 +600,7 @@ enum ReasonCode {
   TIME_OUT = 0x20;
   CONNECT_FAIL = 0x21;
   TOO_MANY_PEERS_WITH_SAME_IP = 0x22;
+  LIGHT_NODE_SYNC_FAIL = 0x23;
   UNKNOWN = 0xFF;
 }
 
@@ -619,6 +622,8 @@ message HelloMessage {
   BlockId headBlockId = 6;
   bytes address = 7;
   bytes signature = 8;
+  int32 nodeType = 9;
+  int64 lowestBlockNum = 10;
 }
 
 message InternalTransaction {