added file and module structure for bitboard::makemove::castles

engine/src/bitboard/makemove.rs

@@ -1,5 +1,6 @@
 mod quiets;
 mod captures;
+mod castles;
 
 use super::bitmove::BitMoveType;
 use super::bitmove::BitMove;

engine/src/bitboard/makemove/castles.rs

@@ -0,0 +1,5 @@
+use super::*;
+
+impl Board {
+  
+}