Link to and clean up process to submit new icons and illustrations
Created from valid questions raised by @ameliabauerly.
When designers are onboarding, the only pointer to the GitLab SVGs project is: https://about.gitlab.com/handbook/engineering/ux/#gitlab-svgs
We should do a better job at explaining/linking to the process to submit new icons and illustrations somewhere. Some pages worth updating with links and/or explanations: