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/a669ef01-ded5-4099-9ea9-25e99b569840.json

@@ -9,7 +9,7 @@
       "parameters": {
         "files": [
           {
-            "url": "https://drive.usercontent.google.com/download?id=1hr2flq5iSyMYSps6Jd-3pDOEfZoHFCbb&export=download&authuser=0&confirm=t&uuid=02746987-6ea8-4fbb-8817-8051dab152e7&at=APZUnTWaH071WARB_12CQDvjfg6b:1707314868059",
+            "url": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/a669ef01-ded5-4099-9ea9-25e99b569840/Writing-Outlines.pptx",
             "path": "/home/user/Desktop/Writing-Outlines.pptx"
           }
         ]
@@ -71,7 +71,7 @@
     "func": "compare_pptx_files",
     "expected": {
       "type": "cloud_file",
-      "path": "https://drive.usercontent.google.com/download?id=15mnwwGTDlelIf27C1HdJOiMgfEWNIoLl&export=download&authuser=0&confirm=t&uuid=b53e5fbb-565b-4498-9dc5-071eded307e0&at=APZUnTUdfXCDVFEQPCTYckB-H2Fn:1707314644205",
+      "path": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/a669ef01-ded5-4099-9ea9-25e99b569840/Writing-Outlines_Gold.pptx",
       "dest": "Writing-Outlines_Gold.pptx"
     },
     "result": {