Add WireMock.Net.AspNetCore.Middleware (#1175)

* Add WireMock.Net.AspNetCore.Middleware

* .

* WireMock.Net.Middleware.Tests

* .

* X-WireMock-Response-Delay

test/WireMock.Net.Middleware.Tests/CustomWebApplicationFactory.cs

@@ -0,0 +1,25 @@
+// Copyright © WireMock.Net
+
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+
+namespace WireMock.Net.Middleware.Tests;
+
+internal class CustomWebApplicationFactory<TEntryPoint> : WebApplicationFactory<TEntryPoint>
+    where TEntryPoint : class
+{
+    private readonly List<(string Key, string Value)> _settings = new();
+
+    public CustomWebApplicationFactory(bool alwaysRedirectToWireMock = true)
+    {
+        _settings.Add(("AlwaysRedirectToWireMock", alwaysRedirectToWireMock.ToString().ToLowerInvariant()));
+    }
+
+    protected override void ConfigureWebHost(IWebHostBuilder builder)
+    {
+        foreach (var arg in _settings)
+        {
+            builder.UseSetting(arg.Key, arg.Value);
+        }
+    }
+}