WIP: fix #47320 added number of activities in the last year

WIP: fix #47320 (moved) added number of activities in the last year

What does this MR do?

It adds a number of activities last year above the contributions chart.

Are there points in the code the reviewer needs to double check?

Yes! All of it 😂 I'm a noob in ruby, haml, JS and pretty much everything. I'm surprised I could get any output at all lol.

Why was this MR needed?

The number of contributions/activities always motivates me to code and contribute more.

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated (not sure if that's necessary but I'm trying to follow the guidlines as much as possible)
• API support added
• Tests added for this feature/bug
• Conform by the code review guidelines
  • Has been reviewed by a UX Designer
  • Has been reviewed by a Frontend maintainer
  • Has been reviewed by a Backend maintainer
  • Has been reviewed by a Database specialist
• Conform by the merge request performance guides
• Conform by the style guides
• If you have multiple commits, please combine them into a few logically organized commits by squashing them
• Internationalization required/considered
• End-to-end tests pass (package-and-qa manual pipeline job)

What are the relevant issue numbers?

#47320 (moved)