Backend task - Yury

[btwotwo]

Project Descriptions

• ExchangeRateUpdater: The main library, designed to be pluggable into existing APIs. It includes its own README.
• ExchangeRateUpdater.Tests: A unit test project using XUnit and FluentAssertions as testing utilities.
• ExchangeRateUpdater.Api: An example API. Run it with dotnet run, then go to http://localhost:5001/swagger to access the Swagger UI. You can call the load-rates endpoint with the example request:

{
  "targetCurrency": "CZK",
  "sourceCurrencies": [
    "USD",
    "EUR",
    "XYZ",
    "JPY"
  ]
}