[board] Rename BitBoard::place_piece_at and BitBoard::remove_piece_at

→ set_square
→ clear_square

board/src/position/position.rs

@@ -141,10 +141,10 @@ impl Position {
             return Err(PiecePlacementError::ExistsOnSquare);
         }
 
-        type_bb.place_piece_at(square);
+        type_bb.set_square(square);
 
         let color_bb = &mut self.bitboard_for_color_mut(piece.color());
-        color_bb.place_piece_at(square);
+        color_bb.set_square(square);
 
         Ok(())
     }