-callback match(Tickets :: [map()], Config :: map()) -> {Matched :: [[map()]], Unmatched :: [map()]}.

Behaviour for matchmaking strategies.

Implement match/2 to define how tickets are grouped into matches. Return {Matched, Unmatched} where Matched is a list of groups (each group is a list of tickets that form a match) and Unmatched is the remaining tickets that couldn't be matched.