feat: Populate LocalFile with real info

ios/App/Shared/util/Extensions.swift

@@ -42,3 +42,26 @@ extension DispatchQueue {
         }
     }
 }
+
+extension URL {
+    var attributes: [FileAttributeKey : Any]? {
+        do {
+            return try FileManager.default.attributesOfItem(atPath: path)
+        } catch let error as NSError {
+            print("FileAttribute error: \(error)")
+        }
+        return nil
+    }
+
+    var fileSize: Int64 {
+        return attributes?[.size] as? Int64 ?? Int64(0)
+    }
+
+    var fileSizeString: String {
+        return ByteCountFormatter.string(fromByteCount: Int64(fileSize), countStyle: .file)
+    }
+
+    var creationDate: Date? {
+        return attributes?[.creationDate] as? Date
+    }
+}