Enable creation of random duels
Implement ability to create a duel against a random user. The creating user should play a round of this duel before trying to match the duel to another user. This is proposed in order to guarantee users the ability to play a duel when opening the app.
Duels should be matched to other users using the "random-duel" feature. Make sure that both players have at least 1 pool in common.
Note: Since questions can be assigned to universities but pools can't, it's not enough to check if users have pools in common, but you also have to check that pools have >=2 questions both users can access. You may use https://gitlab.akamu.de/akamu/game-server-go/-/blob/development/endpoint/pool/query.go#L83