get_team_stats_by_week fails when there is no team_projected_points for a league(for an ended league)

[alperenekin]

Fixes #64
Might also help for #60

• Also added "team_stats" to the same method to return stats for H2H leagues.
• Refactored query method to handle response creation dynamically so it shouldn't fail in case any of the keys in data_key_list is missing in the response.

So the response in my case looks like:

Tests seem to work fine afterwards:

Edit:

I also added a new feature to get stats from multiple team in one request for given week:
def get_teams_stats_by_week(self, team_ids: List[Union[str, int]], chosen_week: Union[int, str] = "current") -> List[Team]:

Which also returns TeamRemainingGames as part of the request. I added relevant model class to parse the response.

Edit2:
Also added get_team_matchup_by_week method to get a specific matchup for the week.