Add support for withdrawal scripts

Author: nielstron

pycardano/plutus.py

@@ -925,7 +925,7 @@ class RedeemerTag(CBORSerializable, Enum):
     SPEND = 0
     MINT = 1
     CERT = 2
-    REWARD = 3
+    WITHDRAW = 3
 
     def to_primitive(self) -> int:
         return self.value

pycardano/txbuilder.py

@@ -310,12 +310,12 @@ def add_withdrawal_script(
             TransactionBuilder: Current transaction builder.
         """
         if redeemer:
-            if redeemer.tag is not None and redeemer.tag != RedeemerTag.REWARD:
+            if redeemer.tag is not None and redeemer.tag != RedeemerTag.WITHDRAW:
                 raise InvalidArgumentException(
-                    f"Expect the redeemer tag's type to be {RedeemerTag.REWARD}, "
+                    f"Expect the redeemer tag's type to be {RedeemerTag.WITHDRAW}, "
                     f"but got {redeemer.tag} instead."
                 )
-            redeemer.tag = RedeemerTag.REWARD
+            redeemer.tag = RedeemerTag.WITHDRAW
             self._consolidate_redeemer(redeemer)
 
         if isinstance(script, UTxO):