Add support for ByteString type in PlutusData

Author: nielstron

test/pycardano/test_plutus.py

@@ -405,7 +405,8 @@ class A(PlutusData):
         CONSTR_ID = 0
         a: int
         b: bytes
-        c: List[int]
+        c: ByteString
+        d: List[int]
 
     @dataclass
     class C(PlutusData):
@@ -424,7 +425,7 @@ class B(PlutusData):
     s = id_map(B)
     assert (
         s
-        == "cons[B](1013743048;a:int,c:cons[A](0;a:int,b:bytes,c:list<int>),d:map<bytes,cons[C](892310804;x:any,y:any,z:any,w:list)>,e:union<cons[A](0;a:int,b:bytes,c:list<int>),cons[C](892310804;x:any,y:any,z:any,w:list)>)"
+        == "cons[B](3809077817;a:int,c:cons[A](0;a:int,b:bytes,c:bytes,d:list<int>),d:map<bytes,cons[C](892310804;x:any,y:any,z:any,w:list)>,e:union<cons[A](0;a:int,b:bytes,c:bytes,d:list<int>),cons[C](892310804;x:any,y:any,z:any,w:list)>)"
     )