Added endpoint to create a sessionCheckout with stripe

src/Web/Endpoints/Stripe.cs

@@ -0,0 +1,17 @@
+using Hutopy.Application.Stripe.Commands;
+
+namespace Hutopy.Web.Endpoints;
+
+public class Stripe : EndpointGroupBase
+{
+    public override void Map(WebApplication app)
+    {
+        app.MapGroup(this)
+            .MapPost(CreateSessionCheckout);
+    }
+
+    public Task<string> CreateSessionCheckout(ISender sender, CreateSessionCheckoutCommand command)
+    {
+        return sender.Send(command);
+    }
+}