Match allocation edge cases

[NWKendall]

Currently, the matchMaking and versusRoutes endpoints handle matchmaking for four individuals, 2 teams of 2 correctly.

Although DS will allocate players to matches with less than 4 players, BE cannot dynamically handle matches if one, two or three players are left out, or what to do if child.id = 0 is present in a match object.

Possibly 2 vs 1 scenario, 1 vs 1 scenario, or duplicate some submissions to be used multiple times to fill in for the missing players.

*Stakeholder aware of issue