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/libreoffice_impress/e4ef0baf-4b52-4590-a47e-d4d464cca2d7.json

@@ -9,7 +9,7 @@
       "parameters": {
         "files": [
           {
-            "url": "https://drive.usercontent.google.com/download?id=1j2-oUuXvkFlOiCloQT-sIG_IOQ0uhmk1&export=download&authuser=0&confirm=t&uuid=4e99f907-1326-4698-950d-31948c26b800&at=APZUnTVHZ0_2y91p31bX9tRyd9gz:1708346723565",
+            "url": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/e4ef0baf-4b52-4590-a47e-d4d464cca2d7/42_2.pptx",
             "path": "/home/user/Desktop/42_2.pptx"
           }
         ]
@@ -61,7 +61,7 @@
     "func": "compare_pptx_files",
     "expected": {
       "type": "cloud_file",
-      "path": "https://drive.usercontent.google.com/download?id=12PGfKYj7iLghI3pahANy7y8Nd4JNQF36&export=download&authuser=0&confirm=t&uuid=8d7ca782-02cf-471b-96a6-ad343ce6d718&at=APZUnTVSQL6QtDaU1chcYHfGBOxB:1708346892226",
+      "path": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/e4ef0baf-4b52-4590-a47e-d4d464cca2d7/42_2_Gold.pptx",
       "dest": "42_2_Gold.pptx"
     },
     "result": {