Improve price predictions for Self-Service dishes

[COM8]

Currently, we are determining the prices for "Self-Service" dishes based on their ingredients.

eat-api/src/menu_parser.py

Lines 123 to 138 in c18419b

	def __getPrice(location: str, dish: Tuple[str, str, str, str, str]) -> Prices:
	if "Self-Service" in dish[0] or location == "mensa-garching":
	if dish[4] == "0": # Meat
	prices: Prices = StudentenwerkMenuParser.prices_self_service_classic
	# Add a base price to the dish
	if "Fi" in dish[2]: # Fish
	prices.setBasePrice(StudentenwerkMenuParser.prices_self_service_base[2])
	else: # Sausage and meat. TODO: Find a way to distinguish between sausage and meat
	prices.setBasePrice(StudentenwerkMenuParser.prices_self_service_base[1])
	return prices
	if dish[4] == "1": # Vegetarian
	return StudentenwerkMenuParser.prices_self_service_classic
	if dish[4] == "2": # Vegan
	return StudentenwerkMenuParser.prices_self_service_vegan
	else:
	pass

This is not that reliable, and we need a better way to do this. Perhaps there might be more information we can extract from the website, so we get better predictions.

Price list:
https://www.studentenwerk-muenchen.de/mensa/mensa-preise/

Menu:
https://www.studentenwerk-muenchen.de/mensa/speiseplan/speiseplan_422_-de.html#heute

[lukasdenk]

I am working on it.
One problem right now is that dish[0] contains the dish type. Therefore, only the prices for mensa-garching are currently parsed by that if clause.