Add pre-commit support

[aleasims]

We can add pre-commit tool support. This is a pretty well-known tool to manage Git hooks easily. Developers will be able to install hooks described in .pre-commit-config.yaml config file and thus save time on contributing.

Possible hooks for us are the tools we use for code quality control now:

• clang-format code formatting check
• markdownlint check

The list can be enlarged in the future.

pre-commit simplifies the process of distributing Git hooks. Developer have to have pre-commit installed (pip install pre-commit) and run pre-commit install afterwards to install all described hooks into his local repository. As a result, when developer runs git commit, these hooks will be invoked and may apply changes before creating a commit.

[aleasims]

@akokoshn @makxenov How do you feel about it? Will it be useful or not?

The reason I'm opening this is because today I forgot again to run clang-format before pushing and therefore lost about an hour waiting the CI pipeline just to see it fails on code formatting. And then I fixed formatting and waited for one hour more to get green ticks on CI.

(For sure partially the reason is that our workers are overloaded but anyway)