Add format hooks and lint action

[grimoire]

This PR add following hooks:

• mdformat for README.md or other docs.
• codespell for spelling check
• mirrors-clang-format for cpp code format.

format style can be edit in .clang-format. Since I do not known which style do you prefer, I just copy it from other repo.

usage:

# install pre-commit
pip3 install pre-commit

# apply pre-commit
pre-commit run --all-file

A lint action is added to perform the check for each push to master.