Add the missing graph_hash.txt and input_meta.py of joeddav_xlm-roberta-large-xnli.

Author: Xreki

samples/transformers-auto-model/joeddav_xlm-roberta-large-xnli/graph_net.json

@@ -0,0 +1,7 @@
+{
+    "framework": "torch",
+    "num_devices_required": 1,
+    "num_nodes_required": 1,
+    "source": "huggingface_hub",
+    "heuristic_tag": "nlp"
+}