add pre-commit

.pre-commit-config.yaml

+repos:
+-   repo: https://github.com/Lucas-C/pre-commit-hooks.git
+    sha: v1.0.1
+    hooks:
+    -   id: remove-crlf
+        files: (?!.*third_party)^.*$ | (?!.*book)^.*$
+-   repo: https://github.com/PaddlePaddle/mirrors-yapf.git
+    sha: 0d79c0c469bab64f7229c9aca2b1186ef47f0e37
+    hooks:
+    -   id: yapf
+        files: (.*\.(py|bzl)|BUILD|.*\.BUILD|WORKSPACE)$
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    sha: 5bf6c09bfa1297d3692cadd621ef95f1284e33c0
+    hooks:
+    -   id: check-added-large-files
+    -   id: check-merge-conflict
+    -   id: check-symlinks
+    -   id: detect-private-key
+        files: (?!.*third_party)^.*$ | (?!.*book)^.*$
+    -   id: end-of-file-fixer
+-   repo: local
+    hooks:
+    -   id: clang-format-with-version-check
+        name: clang-format
+        description: Format files with ClangFormat.
+        entry: bash ./tools/codestyle/clang_format.hook -i
+        language: system
+        files: \.(c|cc|cxx|cpp|cu|h|hpp|hxx|proto)$
+-   repo: local
+    hooks:
+    -   id: cpplint-cpp-source
+        name: cpplint
+        description: Check C++ code style using cpplint.py.
+        entry: bash ./tools/codestyle/cpplint_pre_commit.hook
+        language: system
+        files: \.(c|cc|cxx|cpp|cu|h|hpp|hxx)$
+-   repo: local
+    hooks:
+    -   id: pylint-doc-string
+        name: pylint
+        description: Check python docstring style using docstring_checker.
+        entry: bash ./tools/codestyle/pylint_pre_commit.hook
+        language: system
+        files: \.(py)$
+-   repo: local
+    hooks:
+    -   id: copyright_checker
+        name: copyright_checker
+        entry: python ./tools/codestyle/copyright.hook
+        language: system
+        files: \.(c|cc|cxx|cpp|cu|h|hpp|hxx|proto|py)$
+        exclude: (?!.*third_party)^.*$ | (?!.*book)^.*$