[Feature] MultiGen Eval (Backend) (#117)

Fixes #16

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#117

utilities/misc.py

@@ -919,7 +919,7 @@ class PackageImporter:
                 name=edge_data['name'],
                 description=edge_data['description'],
                 kv=edge_data.get('kv', {}),
-                edge_label=None  # Will be set later
+                edge_label=self._get_cached_object('Reaction', edge_data['edge_label']['uuid'])
             )
 
             # Set aliases if present