use class player instead of player
remove self.player at class Jinziqi_core  and add self.id at class Chess
add chessboard class
use chesses() instead of chesses
chessboard load function dev
add chessXY at Chess
finish chessboard
add Chessboard
player add chess
chessboard put chess
use position to instead of chessboard's  chess
add Position class
test loadchess
add put_chess logic
finish load chessboard
ChessBoard init function use load_chesses_board() to generate the chessboard
finish player.put_chess
modify Chess class
modify Chess class
clean