Make pre_rolled safer by converting namespace/plandoitems/plandoconnections to/from dict.

BaseClasses.py

@@ -1508,8 +1508,20 @@ class PlandoItem(NamedTuple):
         else:
             self.warn(warning)
 
+    def to_dict(self):
+        return {"item": self.item,
+                "location": self.location,
+                "world": self.world,
+                "from_pool": self.from_pool,
+                "force": self.force}
+
 
 class PlandoConnection(NamedTuple):
     entrance: str
     exit: str
     direction: str  # entrance, exit or both
+
+    def to_dict(self):
+        return {"entrance": self.entrance,
+                "exit": self.exit,
+                "direction": self.direction}