Account for tiebreakers in simulation_utils.sort_standings()

[DesiPilla]

When getting a league's standings table, the current code only sort's it by wins and points for, regardless of what the actual tiebreaker is for a league:

espn-api-v3/src/doritostats/simulation_utils.py

Lines 22 to 24 in 2b43d1c

	# ASSUME Playoff Seeding Tie Breaker is "Total Points For"
	# since API doesn't seem to get this data correctly
	standings = standings.sort_values(by=["wins", "points_for"], ascending=False)

Issue cwendt94/espn-api#399 pointed out the error in the API and has since been resolved, meaning that league.settings.playoff_seed_tie_rule now contains correct information.

This function needs to be updated to properly seed teams based on the true tiebreaker.

[DesiPilla]

Per a new update in espn-api, there are now helper functions to sort teams according to a league's specific tiebreaking scenarios. The League().standings_weekly() method can get historical standings tables (which would be good to add to the website), but a new method would have to be created in simulations.py to sort simulated results. It would just be a copy of the function practically.