[Conversions] Adding more currencies to the conversion cog/plugin

[Cabbidachi]

So the conversions cog has this function to convert currencies from one to another. The thing is that i recently noticed it for example doesn't have ARS (Argentina Pesos). I would find it very helpful if it has that currency at one point since i have a friend in Argentina. Besides that addding more currencies to the cog in general would be very neat but isn't specifically needed, since the cog already has a bunch of common currencies like EUR, USD, GBP etc.
Rather take it as a recommendation :3.

[Nanako0129]

I tried TRY (Turkish lira) and it shows, "The currencies provided are not valid!"
I found the code, it use API from https://query1.finance.yahoo.com which provides the currency price data.

Trusty-cogs/conversions/conversions.py

Line 496 in 9f1d6ae

url = f"https://query1.finance.yahoo.com/v8/finance/chart/{currency1}{currency2}=x"

So I think some currency information is missing in their database.