WeatherMap

1. Validate the request parameters in the controller || send Error Responses.
2. Service layer: WeatherService.java
3. WeatherServiceImpl (abstraction)
4. Attributes are stored in application.properties
5. DateUtil component for date format
6. ConcurrentHashMaps for current, minimum and maximum temperature values
7. Main service layer method: getWeatherStatus()
8. Used HttpClient for Http requests, responses