Created by: wangkuiyi

We have pre-commit hooks in the root directory

• https://github.com/PaddlePaddle/Paddle/blob/develop/.clang_format.hook
• https://github.com/PaddlePaddle/Paddle/blob/develop/.copyright.hook

and in the tools directory

• ./tools/codestyle/cpplint_pre_commit.hook

Let us move them into /tools/pre-commit.hook like what I did in https://github.com/wangkuiyi/fluid