Enhance file metadata tracking and garbage collection logic

- Added AccessCount field to FileInfo struct for improved tracking of file access frequency.
- Updated NewFileInfo and NewFileInfoFromOS functions to initialize AccessCount.
- Modified DiskFS and MemoryFS to preserve and increment AccessCount during file operations.
- Enhanced garbage collection methods (LRU, LFU, FIFO, Largest, Smallest, Hybrid) to utilize AccessCount for more effective space reclamation.

.vscode/launch.json

@@ -23,8 +23,8 @@
                 "lru",
                 "--log-level",
                 "debug",
-                "--upstream",
-                "http://192.168.2.5:80",
+                // "--upstream",
+                // "http://192.168.2.5:80",
             ],
         },
         {
@@ -42,8 +42,8 @@
                 "hybrid",
                 "--log-level",
                 "debug",
-                "--upstream",
-                "http://192.168.2.5:80",
+                // "--upstream",
+                // "http://192.168.2.5:80",
             ],
         },
         {