Add model metadata for LLM PoC

model-index.yml

@@ -2,7 +2,14 @@ model-index:
   - name: Yuuki
     results:
       - task: text-generation
-        dataset: dummy-dataset
+        dataset: bigcode/the-stack-smol-xl
         metrics:
           - type: perplexity
-            value: 0.0
+            value: 1.0   # dummy, no cero
+    language:
+      - en
+    license: apache-2.0
+    tags:
+      - text-generation
+      - causal-lm
+    pipeline_tag: text-generation