Add PSP middleware and fix PSP digest issues (#155)

Refresh.GameServer/Middlewares/DigestMiddleware.cs

@@ -69,7 +69,8 @@ private void SetDigestResponse(ListenerContext context)
 
     public void HandleRequest(ListenerContext context, Lazy<IDatabaseContext> database, Action next)
     {
-        if (!context.Uri.AbsolutePath.StartsWith("/lbp"))
+        //If this isnt an LBP endpoint, or it is a PSP client, dont do digest
+        if (!context.Uri.AbsolutePath.StartsWith("/lbp") || context.RequestHeaders.Get("X-data-v") != null || context.RequestHeaders.Get("X-exe-v") != null)
         {
             next();
             return;

Refresh.GameServer/Middlewares/PspVersionMiddleware.cs

@@ -0,0 +1,26 @@
+using Bunkum.CustomHttpListener.Request;
+using Bunkum.HttpServer.Database;
+using Bunkum.HttpServer.Endpoints.Middlewares;
+
+namespace Refresh.GameServer.Middlewares;
+
+public class PspVersionMiddleware : IMiddleware
+{
+    public void HandleRequest(ListenerContext context, Lazy<IDatabaseContext> database, Action next)
+    {
+        string? exeVersion = context.RequestHeaders.Get("X-exe-v");
+        string? dataVersion = context.RequestHeaders.Get("X-data-v");
+
+        if (exeVersion != null)
+        {
+            context.ResponseHeaders["X-exe-v"] = exeVersion;
+        }
+
+        if (dataVersion != null)
+        {
+            context.ResponseHeaders["X-data-v"] = dataVersion;
+        }
+
+        next();
+    }
+}

Refresh.GameServer/RefreshGameServer.cs

@@ -100,6 +100,7 @@ protected virtual void SetupMiddlewares()
         this._server.AddMiddleware<WebsiteMiddleware>();
         this._server.AddMiddleware<DigestMiddleware>();
         this._server.AddMiddleware<CrossOriginMiddleware>();
+        this._server.AddMiddleware<PspVersionMiddleware>();
     }
 
     protected virtual void SetupConfiguration()