WIP: implemented registration and EULA accept, WIP on auth issue

JOBot.TClient/Services/MenuService.cs

@@ -0,0 +1,17 @@
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using User = JOBot.Proto.User;
+
+namespace JOBot.TClient.Services;
+
+public class MenuService(ITelegramBotClient bot)
+{
+    public Task RenderMenu(Update update, CancellationToken ct = default)
+    {
+        ArgumentNullException.ThrowIfNull(update.Message?.From);
+        
+        bot.SendMessage(update.Message.From.Id,"PrepareUser stage is done.", cancellationToken: ct);
+        
+        return Task.CompletedTask;
+    }
+}