Adds the option to allow requesting the actively running list of games from the server without requiring authentication

This adds two new config options under a new api section, below are the default values:

{
    "api": {
        "public_games": false,
        "public_games_hide_players": true
    }
}

Setting public_games to true will allow anyone to request the /api/games endpoint without requiring auth, by default the details about the players of the game are not included in this response unless the user is authenticated. You can allow unauthenticated users to see the players in each game by setting public_games_hide_players to false.