chat: add database types and auth middleware

Foxchat.Chat/Extensions/WebApplicationExtensions.cs

@@ -0,0 +1,18 @@
+using Foxchat.Chat.Middleware;
+
+namespace Foxchat.Chat.Extensions;
+
+public static class WebApplicationExtensions
+{
+    public static IServiceCollection AddCustomMiddleware(this IServiceCollection services)
+    {
+        return services
+            .AddScoped<AuthenticationMiddleware>();
+    }
+
+    public static IApplicationBuilder UseCustomMiddleware(this IApplicationBuilder app)
+    {
+        return app
+            .UseMiddleware<AuthenticationMiddleware>();
+    }
+}