Add BOS models

DVD/ProgramChainTable.cs

@@ -0,0 +1,27 @@
+namespace BinaryObjectScanner.Models.DVD
+{
+    /// <see href="https://dvd.sourceforge.net/dvdinfo/ifo_vmg.html"/>
+    public sealed class ProgramChainTable
+    {
+        /// <summary>
+        /// Number of Program Chains
+        /// </summary>
+        public ushort NumberOfProgramChains;
+
+        /// <summary>
+        /// Reserved
+        /// </summary>
+        public byte[] Reserved;
+
+        /// <summary>
+        /// End address (last byte of last PGC in this LU)
+        /// relative to VMGM_LU
+        /// </summary>
+        public uint EndAddress;
+
+        /// <summary>
+        /// Program Chains
+        /// </summary>
+        public ProgramChainTableEntry[] Entries;
+    }
+}