Add evaluation results

mbench/ppo-LunarLander-v2/results_637b6d964699d504c1cd623be7ae444fb98d2953.json

@@ -0,0 +1,63 @@
+{
+  "config": {
+    "model_id": "mbench/ppo-LunarLander-v2",
+    "model_sha": "637b6d964699d504c1cd623be7ae444fb98d2953"
+  },
+  "results": {
+    "LunarLander-v2": {
+      "episodic_returns": [
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+        287.62729257663625,
+        263.754499920123,
+        251.2105569893688
+      ]
+    }
+  },
+  "status": "DONE"
+}