public LeagueViewModel()
        {
            Roster brianRosters = new Roster("Bombiarze", GetBomberPlayers());
            BriansTeam = new RosterViewModel(brianRosters);

            Roster jimmyRosters= new Roster("Twardziele", GetAmazinPlayers());
            JimmysTeam = new RosterViewModel(jimmyRosters);
        }
        public RosterViewModel(Roster roster)
        {
            _roster = roster;
            TeamName = roster.TeamName;

            Bench = new ObservableCollection<PlayerViewModel>();
            Starters = new ObservableCollection<PlayerViewModel>();

            UpdateRosters();
        }