feat: add python and java solutions to lcci problem: No.04.10 and No.04.12

[ghost]

添加《程序员面试金典》题解：面试题 04.10 检查子树 和 04.12 求和路径

[yanglbme]

@lihangqi 你好，方便改成 Python3 的模板吗？

像以下这种：

# Definition for a binary tree node.
# class TreeNode:
#     def __init__(self, x):
#         self.val = x
#         self.left = None
#         self.right = None

class Solution:
    def checkSubTree(self, t1: TreeNode, t2: TreeNode) -> bool:

而不是：

class Solution(object):
    def checkSubTree(self, t1, t2):