Create Nuget Packge Suppots Dependecy Injection and use Interface to be implemented

I am trying to develop a weather Nuget package that can be used in any .netcore project, the library should give me the current weatherfor a specific city that I chose in Celsius or Fahrenheit.

I will use the weatherapi.com to get the current weather.

The library should support the dependency injection (DI) throw a service calledIGetCurrentWeather with one method that’s take a city name and optionalparameter to chose whether I want the result in Celsius or Fahrenheit.

I should be able to register the library in the startup of any .NET CORE project andprovide the necessary configurations like the image below

the interface:

public interface IGetCurrentWeather    {        public async Task<string> GetCurrentWeather()        {            HttpClient client = new HttpClient();            HttpResponseMessage response = await client.GetAsync("http://api.weatherapi.com/v1/current.json?key=d1398cba8a894feb9f7180821232602&q=London&aqi=no\r\n");            response.EnsureSuccessStatusCode();            string responseBody = await response.Content.ReadAsStringAsync();            return responseBody;        }    }

AddWeather Function:

public static class WeatherApi    {        public static WeatherOptions Options { get; } //set only via Secret Manager        public static IServiceCollection AddWeatherApi(this IServiceCollection services, Action<WeatherOptions> configure)        {            services.Configure(configure) ;            return services;        }

WeatherOptions:

public class WeatherOptions    {        public string ApiKey { get; set; }    }

how can i use the ApiKey when call GetCurrentWeather() function to access weatherapi.com account?