说明：   本函数用深度优先遍历（回溯法）来求解迷宫的所有路径 maze:是迷宫矩阵，其中0表示可以去走的路 1表示障碍 2表示入口 3表示出径 5表示路径
(Road this function with a depth-first traversal (backtracking) to solve the maze path maze: a maze matrix, where 0 means you can go to go 1 shows the obstacles 2 entrance 3 shows the diameter 5 shows the path)