[Feature] Attach AdditionalInformation to Nodes (#428)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#428

epdb/legacy_api.py

@@ -1620,7 +1620,7 @@ class PathwayNode(Schema):
     image: str = Field(None, alias="image")
     imageSize: int = Field(None, alias="image_size")
     name: str = Field(None, alias="name")
-    proposed: List[Dict[str, str]] = []
+    proposed: List[Dict[str, Any]] = []
     smiles: str = Field(None, alias="smiles")
     pseudo: bool = Field(False, alias="pseudo")