корсы добавлены (#3)

Co-authored-by: gorbenko.pavel <gorbenko.pavel@tansu.kz>
Reviewed-on: http://git.tnsu.kz/gorbenko.pavel/tnsu-approval-route/pulls/3

backend/src/Tnsu.ApprovalRoute.Api/Program.cs

@@ -11,8 +11,18 @@ using Tnsu.ApprovalRoute.Application;
 using Tnsu.ApprovalRoute.Application.Common.Interfaces;
 using Tnsu.ApprovalRoute.Infrastructure;
 
+const string CorsPolicyName = "Frontend";
+
 var builder = WebApplication.CreateBuilder(args);
 
+var corsAllowedOrigins = builder.Configuration.GetSection("Cors:AllowedOrigins").Get<string[]>() ?? [];
+builder.Services.AddCors(options =>
+{
+    options.AddPolicy(CorsPolicyName, policy => policy
+        .WithOrigins(corsAllowedOrigins)
+        .AllowAnyHeader()
+        .AllowAnyMethod());
+});
 builder.Services.AddApprovalRouteInfrastructure(builder.Configuration);
 builder.Services.AddApprovalRouteApplication();
 builder.Services.AddApprovalRouteAuth(builder.Configuration);
@@ -63,6 +73,8 @@ app.MapScalarApiReference(options =>
 
 app.MapHealthChecks("/health");
 
+app.UseCors(CorsPolicyName);
+
 app.UseAuthentication();
 app.UseAuthorization();