Enable AutoModel loading

config.json

@@ -4,6 +4,7 @@
   ],
   "model_type": "ogma",
   "auto_map": {
+    "AutoConfig": "configuration_ogma.OgmaConfig",
     "AutoModel": "ogma_model.OgmaModel"
   },
   "variant": "transformer",
@@ -33,4 +34,4 @@
   "doc_id": 5,
   "sym_id": 6,
   "n_special_tokens": 7
-}
+}