Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

Infrastructure/Auth/ServiceCollectionExtensions.cs

@@ -0,0 +1,22 @@
+using System.IdentityModel.Tokens.Jwt;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Infrastructure.Auth;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddTokenGenerator(this IServiceCollection services, TokenGeneratorOptions options)
+    {
+            services.AddSingleton<JwtSecurityTokenHandler>();
+            services.AddSingleton<ITokenGenerator, TokenGenerator>(provider =>
+            {
+                var tokenHandler = provider.GetRequiredService<JwtSecurityTokenHandler>();
+                var dateTimeProvider = provider.GetRequiredService<IDateTimeProvider>();
+
+                return new TokenGenerator(options, tokenHandler, dateTimeProvider);
+            });
+
+            return services;
+        }
+}