Fix: Handle empty leaderboard and add example data

eval-queue/test__test-model_eval_request_float16.json

@@ -0,0 +1,11 @@
+{
+  "model": "test/test-model",
+  "precision": "float16",
+  "status": "FINISHED",
+  "model_type": "pretrained",
+  "weight_type": "Original",
+  "license": "apache-2.0",
+  "likes": 10,
+  "params": 1.3,
+  "submitted_time": "2023-11-21T15:29:25.832Z"
+}

eval-results/results.json

@@ -0,0 +1,15 @@
+{
+  "config": {
+    "model_name": "test/test-model",
+    "model_dtype": "float16",
+    "model_sha": "abcdef123456"
+  },
+  "results": {
+    "anli_r1": {
+      "acc": 0.33
+    },
+    "logiqa": {
+      "acc_norm": 0.25
+    }
+  }
+}