Stanley's backend task

[stanley64]

• Implemented GetExchangeRates method
• Created unit test project to test GetExchangeRates method
• Transitioned from console app to web app
• Added resilience pipeline

A couple of decisions felt overkill to me, as it is just a simple application. I eventually decided to add them anyway, because I wouldn't be able to show enough of my skills and knowledge.

Future considerations:

• Add any advanced logging provider, like SeriLog.
• Depending on the need, containerizing the application. As it's currently only running once instead of periodically taking some data and maybe putting it in a database or something, this felt overkill for now.

Thanks for reviewing my PR <:-)