Added and used Config.GetRequired Extension

Author: szv

src/shared/CodeBreaker.Shared/CodeBreaker.Shared.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="FluentValidation" Version="11.4.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="7.0.2" />
   </ItemGroup>
 

src/shared/CodeBreaker.Shared/Extensions/ConfigExtensions.cs

@@ -0,0 +1,10 @@
+using CodeBreaker.Shared.Exceptions;
+using Microsoft.Extensions.Configuration;
+
+namespace Microsoft.Extensions.Configuration;
+
+public static class ConfigExtensions
+{
+    public static string GetRequired(this IConfiguration config, string configKey) =>
+        config[configKey] ?? throw new ConfigurationNotFoundException(configKey);
+}