Group metascore

A magyar leírás lent található

## English description

Groups can have a similar metascore to what users have, so in the search list groups with a higher score will appear on the top.

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## Magyar leírás

A felhasználókhoz hasonlóan a köröknél is lehetne metascore, ami alapján a keresőben megjelenítjük őket.

No files or tests are named. Start by reading how user metascores are calculated and how groups are included in the search list. Define the group scoring behavior and verify that groups with higher metascores appear first, consistent with the requested user behavior.

Written by the indexing model from the issue text.