refactor: add validator registration value

Author: alexbarnsley

crypto/transactions/builder/validator_registration_builder.py

@@ -13,5 +13,10 @@ def validator_public_key(self, validator_public_key: str):
         self.transaction.refresh_payload_data()
         return self
 
+    def value(self, value: int):
+        self.transaction.data['value'] = int(value)
+        self.transaction.refresh_payload_data()
+        return self
+
     def get_transaction_instance(self, data: dict):
         return ValidatorRegistration(data)

crypto/transactions/deserializer.py

@@ -81,7 +81,7 @@ def __guess_transaction_from_data(self, data: dict) -> AbstractTransaction:
             if function_name == AbiFunction.MULTIPAYMENT.value:
                 return Multipayment(data)
 
-        if data['value'] != '0':
+        if data['data'] == '':
             return Transfer(data)
 
         consensus_payload_data = self.decode_payload(data)