Add sponsorships

[jaydrogers]

👉 Describe the problem

• GitHub Sponsors need to be listed in our README
• There are many projects for Server Side Up, so an automated solution is preferred

👥 Problem evidence & reach

• All sponsors

🥰 Describe the "impact" on users?

Resolving this issue will help showcase the support we receive from our members, as well as showcase the projects they support.

🏆 How to solve this problem

There is an automated GitHub Actions bot that might work: https://github.com/JamesIves/github-sponsors-readme-action

💯 How do we validate the problem is solved?

• Sponsors should automatically have their profile and avatar listed on our projects