feat: added telegram client bot, created DB

JOBot.Backend/Program.cs

@@ -1,6 +1,9 @@
+using Microsoft.AspNetCore.Server.Kestrel.Core;
+
 var builder = WebApplication.CreateBuilder(args);
 
 var startup = new Startup(builder.Configuration);
+
 startup.ConfigureServices(builder.Services);
 
 var app = builder.Build();