Add codeclimate.yml
What does this MR do?
Adds codeclimate.yml with explicit exclude of lib/api/v3
Are there points in the code the reviewer needs to double check?
no
Why was this MR needed?
To show real issues with code at https://codeclimate.com/github/gitlabhq/gitlabhq by ignoring /api/v3
path.
Edited by username-removed-444