create BitBoard::DIRECTIONS

src/repr/bitboard.rs

@@ -79,6 +79,18 @@ impl BitBoard {
         self.south().west()
     }
 
+    /// All direction methods
+    pub const DIRECTIONS: [fn(&Self) -> Self; 8] = [
+        BitBoard::east,
+        BitBoard::west,
+        BitBoard::north,
+        BitBoard::south,
+        BitBoard::northeast,
+        BitBoard::northwest,
+        BitBoard::southeast,
+        BitBoard::southwest,
+    ];
+
     // Mask for a specific column (e.g., col_mask(7) = 0x8080808080808080)
     const fn col_mask(col: CoordAxis) -> Self {
         let mut mask = 0;