devtools/label: Add initial script to auto-label issues/PRs.
The first iteration of this script only allows users to add a version label based on the local branch version.yml.
Ensure we always prefix the version number with 'v', so it is added to both, the original and the backport PR.
Co-authored-by: Andres Rodriguez <andres.lazo@elastic.co>
Add devtools: backport and create_pr
Adds two scripts to help developers automatically create a PR:
* backport: Allows back porting commits to any other branch. It uses cherry-pick.
* create_pr: Automatically creates a PR from your local branch.
