feat: added telegram client bot, created DB

JOBot.TClient/Program.cs

@@ -1,2 +1,44 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+using Grpc.Net.Client;
+using Proto = JOBot.Proto;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using Microsoft.Extensions.Configuration;
+
+var config = new ConfigurationBuilder()
+    .AddJsonFile("appsettings.json")
+    .AddJsonFile("appsettings.Development.json", true)
+    .Build();
+
+var botClient = new TelegramBotClient(config.GetValue<string>("TelegramToken") 
+    ?? throw new MissingFieldException("TelegramToken is not set"));
+botClient.StartReceiving(HandleUpdate, HandleError);
+
+Console.WriteLine("Бот запущен. Нажмите Enter для остановки.");
+Console.ReadLine();
+
+async Task HandleUpdate(ITelegramBotClient bot, Update update, CancellationToken ct)
+{
+    using var channel = GrpcChannel.ForAddress(config.GetValue<string>("BackendHost") 
+        ?? throw new MissingFieldException("Host is not defined"));
+    var userClient = new Proto.User.UserClient(channel);
+
+    if (update.Message?.Text == "/start")
+    {
+        var reply = await userClient.RegisterAsync(new Proto.RegisterRequest
+        {
+            UserId = update.Message.Chat.Id,
+            Username = update.Message.Chat.Username ?? ""
+        });
+
+        await bot.SendMessage(
+            chatId: update.Message.Chat.Id,
+            text: reply.Success ? "✅ Вы зарегистрированы!" : "❌ Ошибка",
+            cancellationToken: ct);
+    }
+}
+
+Task HandleError(ITelegramBotClient bot, Exception ex, CancellationToken ct)
+{
+    Console.WriteLine($"Ошибка: {ex.Message}");
+    return Task.CompletedTask;
+}