[FR] - add provider for yfinance-cache

[ValueRaider]

I hope the benefit of persistently caching data is obvious - speed for user, less load on provider.

I've been working on a persistent caching wrapper for yfinance - yfinance-cache. Basic idea is be smart about what & when to fetch. Supports a subset of yfinance - price history, calendar, shares outstanding, info. Currently finishing off financials caching.

Still needs some polish, but now might be a good time to start thinking about integrating into OpenBB. API intended as a drop-in replacement of yfinance so should be easy. @deeleeramone I see you mostly handle the yfinance provider, this feature might interest you. I did experiment creating a provider, but then discovered providers hardcoded anyway.