feat: support TON and USDT Jetton payments

- add TON chain, token, RPC, address normalization, and order matching support
- add liteclient scanner with masterchain/shard catch-up and Jetton validation
- add TON manual payment verification and focused tests

src/model/mdb/wallet_address_mdb.go

@@ -12,6 +12,7 @@ const (
 	NetworkBsc      = "binance"
 	NetworkPolygon  = "polygon"
 	NetworkPlasma   = "plasma"
+	NetworkTon      = "ton"
 )
 
 const (