tournament support

Rough ideas:

• Import from Cobra
• Create lobbies for each pairing
• Start button to make all games start simultaneously
• TO can set options for all games in the tournament
• Some way to send a message to each lobby
• Bind/map cobra names to jnet user names, restrict joining a lobby to those who are within the game
• TO creates a lobby: generate lobby code that players use to see the games.
• To join a tournament, players choose 2 tournament-format legal decks, which are locked in.
• Deck lists have a checksum for verification and enforcing no changes
• Checkbox for streamers that gives them access as spectators
• Some method for the TO to ping players, idk how exactly lol
• And make sure cobra player name comparison is case insensitive