feat: Migrate OSWorld files to HuggingFace cache with comprehensive documentation

- Add detailed README for file cache repository
- Implement migration script with retry logic and browser simulation
- Support automatic file type detection and deduplication
- Ensure reliable hosting for OSWorld evaluation files

evaluation_examples/examples/os/5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57.json

@@ -10,7 +10,7 @@
       "parameters": {
         "files": [
           {
-            "url": "https://drive.usercontent.google.com/download?id=1XaTnC_lLbR_tGTz8tcN2Tp6cNrMlNW3R&export=download&authuser=0&confirm=t&uuid=89e69a23-43cf-4316-833a-fb9d3e281460&at=APZUnTWn5zZTH4GlClO6lV1i4WwP:1706184669922",
+            "url": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/os/5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57/poster_party_night.webp",
             "path": "/home/user/Desktop/poster_party_night.webp"
           }
         ]
@@ -39,16 +39,16 @@
   ],
   "evaluator": {
     "func": "exact_match",
-      "result": {
-        "type": "vm_command_line",
-        "command": "[ -f /home/user/Desktop/poster_party_night.webp ] && echo 'File exists.' || echo 'File does not exist.'",
-        "shell": true
-      },
-      "expected": {
-        "type": "rule",
-        "rules":{
-          "expected": "File exists.\n"
-        }
+    "result": {
+      "type": "vm_command_line",
+      "command": "[ -f /home/user/Desktop/poster_party_night.webp ] && echo 'File exists.' || echo 'File does not exist.'",
+      "shell": true
+    },
+    "expected": {
+      "type": "rule",
+      "rules": {
+        "expected": "File exists.\n"
       }
+    }
   }
 }