MVC: Display achievements on user profile

Create a basic Vue component to display achievements on user profiles

Depends on: #385384 (closed)

See note and mockup from @Taucher2003 &9429 (comment 1204263439)

Suggested design

This relates to the top bit only, the separate achievements tab will come at a later stage

I think it would be good to just show the image and use a tooltip/popover to display:

• source (e.g. namespace that issues the achievement)
• achievement name
• achievement description