Allow defining badges on a file commited to the repository
## Problem to solve
When starting a new project, setting the badges seems to be overly complicated. In our case, we usually use the same set of badges, and copy them from project to project manually.
### Target audience
- Parker, Product Manager, https://design.gitlab.com/research/personas#persona-parker
- Delaney, Development Team Lead, https://design.gitlab.com/research/personas#persona-delaney
- Sasha, Software Developer, https://design.gitlab.com/research/personas#persona-sasha
- Devon, DevOps Engineer, https://design.gitlab.com/research/personas#persona-devon
## Proposal
It would be great to be able to declare the badges in a file that's parsed by the UI (maybe even within `.gitlab-ci.yml`?)
issue