Add SFFS models, no encryption

BurnOutSharp.Models/SFFS/FileEntry.cs

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+using System.Runtime.InteropServices;
+
+namespace BurnOutSharp.Models.SFFS
+{
+    /// <see cref="https://forum.xentax.com/viewtopic.php?f=21&t=2084"/>
+    [StructLayout(LayoutKind.Sequential)]
+    public class FileEntry
+    {
+        /// <summary>
+        /// MD5 hash of filename (not encrypted,)
+        /// </summary>
+        /// <remarks>0x10 bytes</remarks>
+        public byte[] FilenameMD5Hash;
+
+        /// <summary>
+        /// Index of fileheader (encrypted with filename)
+        /// </summary>
+        public ulong FileHeaderIndex;
+    }
+}

BurnOutSharp.Models/SFFS/FileHeader.cs

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+using System.Runtime.InteropServices;
+
+namespace BurnOutSharp.Models.SFFS
+{
+    /// <see cref="https://forum.xentax.com/viewtopic.php?f=21&t=2084"/>
+    [StructLayout(LayoutKind.Sequential)]
+    public class FileHeader
+    {
+        /// <summary>
+        /// Start of file content (encrypted with filename)
+        /// </summary>
+        public ulong FileContentStart;
+
+        /// <summary>
+        /// File info (timestamps, size, data position, encrypted)
+        /// </summary>
+        /// <remarks>Unknown format</remarks>
+        public byte[] FileInfo;
+    }
+}

BurnOutSharp.Models/SFFS/Header.cs

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+using System.Runtime.InteropServices;
+
+namespace BurnOutSharp.Models.SFFS
+{
+    /// <summary>
+    /// Header
+    /// </summary>
+    /// <see cref="https://forum.xentax.com/viewtopic.php?f=21&t=2084"/>
+    [StructLayout(LayoutKind.Sequential)]
+    public class Header
+    {
+        /// <summary>
+        /// "SFFS"
+        /// </summary>
+        public uint Magic;
+
+        /// <summary>
+        /// Version (0x00000001)
+        /// </summary>
+        public uint Version;
+
+        /// <summary>
+        /// Number of files in the container (encrypted with application key).
+        /// Minimal number here is usually 65h, so its not real file count
+        /// in some cases, more like index size
+        /// </summary>
+        public ulong FileCount;
+    }
+}

BurnOutSharp.Models/SFFS/StarForceFileSystem.cs

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+namespace BurnOutSharp.Models.SFFS
+{
+    /// <summary>
+    /// SFFS consists of 2 major parts: the container files that contain the game
+    /// content and a filesystem filter driver (sfvfs02.sys) that handles all file-io.
+    /// When a game has SFFS'ed files and uses some file-io api like CreateFile, the
+    /// SFFS filterdriver sees this request and handles it if needed.that way, SFFS is
+    /// totally transparent to the game, since it never knows if the data is coming from
+    /// real file API or from the SFFS filterdriver. during SF initialization, the
+    /// SF-process registers itself as a SFFS process in a processid list, maintained
+    /// from the filterdriver. Part of that registration are the names of the
+    /// containerfiles, the process uses and an application key, that is needed to
+    /// decrypt headerinfos. Note that SFFS itself is completly vm-free.
+    /// </summary>
+    /// <see cref="https://forum.xentax.com/viewtopic.php?f=21&t=2084"/>
+    public class StarForceFileSystem
+    {
+        /// <summary>
+        /// Header
+        /// </summary>
+        public Header Header { get; set; }
+
+        /// <summary>
+        /// Files
+        /// </summary>
+        public FileEntry[] Files { get; set; }
+
+        /// <summary>
+        /// File headers
+        /// </summary>
+        public FileHeader[] FileHeaders { get; set; }
+    }
+}