Gatsby: Protect master branch

[alexandrtovmach]

Description

We are working on Russian translation in https://github.com/gatsbyjs/gatsby-ru repo, and in some reason a few not native speakers sending to us PR with robotic translation of docs (Google Translator or something else):

https://github.com/gatsbyjs/gatsby-ru/pull/7
https://github.com/gatsbyjs/gatsby-ru/pull/17

We are still not sure why they are doing that (maybe for a swag 🤔), but we had a real problem with second case. Developer committed directly to master without any approval https://github.com/gatsbyjs/gatsby-ru/commit/b6301dce6f229a9e71a8000b8eaa177d37a0c81c, then he is asked to revert it, but it's still a problem.

Expected result

master branch should be protected from direct commits and allow only PR approach.

Actual result

Everyone, with member rights able to commit directly to master.

[m-allanson]

Thanks for pointing this out @alexandrtovmach. The gatsby-es and gatsby-ru repos now have branch protection and require a CODEOWNERS code review before merging PRs.

[alexandrtovmach]

@m-allanson Thank you