Backend login and register

src/Application/Extensions/ServiceCollectionExtensions.cs

@@ -0,0 +1,20 @@
+using Application.Interfaces;
+using Application.Services;
+using FluentValidation;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Application.Extensions;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddApplication(this IServiceCollection services)
+    {
+        services.AddValidatorsFromAssembly(typeof(ServiceCollectionExtensions).Assembly);
+        services.AddScoped<IAuthenticationService, AuthenticationService>();
+        services.AddScoped<IJwtService, JwtService>();
+        services.AddScoped<IEmailService, EmailService>();
+        services.AddScoped<IUserService, UserService>();
+
+        return services;
+    }
+}