86f887a18b
- Introduced a new helper method `fetchData` to streamline HTTP requests for currency data. - Replaced direct HTTP calls with the new `fetchData` method for better code organization. - Utilized `NumberFormatter` for consistent number formatting, replacing the previous `virgulToNokta` method. - Enhanced data handling for currency rates, ensuring proper type casting and rounding for values. - Removed commented-out code related to gold rates to clean up the implementation. These changes enhance the maintainability and readability of the currency fetching logic.