Add paypal donation link

[hanEck]

The new VIM website should include the possibility to donate money via an paypal donation link (as has been done before)

[aj-ats]

Hi team, I'd be happy to take on this task! To get started, could I get some source code to work with?

Also, I wanted to suggest using HTMX for the frontend, as it seems like there hasn't been any frontend work done in this repo . I'd love to start building, but I'd appreciate some confirmation that this project is still active and not abandoned. Let me know if that's okay with everyone, and I'll get started