Add docs for super training block

PKHeX.Core/Saves/Substructures/Gen6/SuperTrainBlock.cs

@@ -0,0 +1,21 @@
+namespace PKHeX.Core
+{
+    public class SuperTrainBlock : SaveBlock
+    {
+        public SuperTrainBlock(SAV6XY sav, int offset) : base(sav) => Offset = offset;
+        public SuperTrainBlock(SAV6AO sav, int offset) : base(sav) => Offset = offset;
+
+        // Structure:
+        // 8 bytes ??? (flags?)
+        // float[48] recordScore1; // 0x08, 4byte/entry
+        // float[48] recordScore2; // 0xC8, 4byte/entry
+        // SS-F-G[48] recordHolder1; // 0x188, 4byte/entry
+        // SS-F-G[48] recordHolder2; // 0x248, 4byte/entry
+        // byte[12] bags? // 0x308
+        // u32 ??? // 0x314
+
+        // 0x318 total size
+
+        // SS-F-G = u16 species, u8 form, u8 gender
+    }
+}