brand.yml

[EllaKaye]

As mentioned in #6, I think it would be interesting to develop a brand for R Contributors that could be applied in a brand.yml file. Then it could be applied to an updated-to-quarto R Contributors website, the newly-Quarto-ed R Dev Guide, and any future websites we develop, say for Dev Days. In the future, it can also be used for branding dashboards and shiny apps, so could be used on the translations dashboard etc.

I'd be happy/keen to work on this.