Auto-Label Merge Request Using Branch Naming
### Description
Currently, we are able to auto-protect a branch based on certain naming schemes, this is a proposal to auto-Label a merge request based on the naming scheme of the branch you are merging into.
### Proposal
Create the ability to automatically label merge requests based on the branch you are merging into. For instance, if an effort has a long running branch, anyone merging into that branch could have the "Project Name" label added to the merge request automatically. Likewise, if a merge request is created targeting a release branch, could auto label it with the "release version" tag.
#### Overview
Why should someone use this feature? --> For projects with a large number of branches, this allows for easy categorization and sorting
What is the underlying (business) problem? --> When looking to get an overview of what is coming to a given branch, currently requires manually looking at the target branch
### Feature checklist
Make sure these are completed before closing the issue,
with a link to the relevant commit.
- [ ] [Feature assurance](https://about.gitlab.com/handbook/product/#feature-assurance)
- [ ] Documentation
- [ ] Added to [features.yml](https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/features.yml)
issue