First round of cleanup for DolphinLib additions

SabreTools.Data.Models/NintendoDisc/FileSystemTableEntry.cs

@@ -0,0 +1,26 @@
+namespace SabreTools.Data.Models.NintendoDisc
+{
+    /// <summary>
+    /// File entry with start and end byte offsets on disc
+    /// </summary>
+    public class FileSystemTableEntry
+    {
+        /// <summary>
+        /// Offset to the entry name
+        /// </summary>
+        /// <remarks>Big-endian, has high byte set to 0xFF if a directory entry</remarks>
+        public uint NameOffset { get; set; }
+
+        /// <summary>
+        /// Offset to the start of the file
+        /// </summary>
+        /// <remarks>Big-endian</remarks>
+        public uint FileOffset { get; set; }
+
+        /// <summary>
+        /// File size
+        /// </summary>
+        /// <remarks>Big-endian</remarks>
+        public uint FileSize { get; set; }
+    }
+}