Add convenient navigation and jump to top options

[s-katte]

The page can get unnaturally long with the list of over 10 repositories. The navigation should be made convenient.

[gridhead]

Could I pick this up? I think I'd be able to deliver the requested changes.

[s-katte]

Sure @t0xic0der, I am assigning this issue to you

Happy hacking! 🥳