feat: added RabbitMQ queue from back-end to hook auth for client

JOBot.Backend/Startup.cs

@@ -3,6 +3,7 @@ using JOBot.Backend.Infrastructure.Config;
 using JOBot.Backend.Services;
 using JOBot.Backend.Services.gRPC;
 using Microsoft.EntityFrameworkCore;
+using RabbitMQ.Client;
 
 namespace JOBot.Backend;
 
@@ -10,12 +11,20 @@ public class Startup(IConfiguration configuration)
 {
     private IConfiguration Configuration { get; } = configuration;
 
-    public void ConfigureServices(IServiceCollection services)
+    public async Task ConfigureServices(IServiceCollection services)
     {
         services.AddGrpc(); 
         services.AddGrpcReflection();
         services.AddControllers();
         services.AddLogging();
+
+        await using var rabbitMqConnection = await new ConnectionFactory
+        {
+            HostName = "jobot-rabbitmq"
+        }.CreateConnectionAsync();
+        await using var channel = await rabbitMqConnection.CreateChannelAsync();
+        await channel.QueueDeclareAsync(RabbitQueues.AuthQueue, false, false, autoDelete: false);
+        services.AddSingleton(channel);
         
         services.AddDbContext<AppDbContext>(options =>
             options.UseNpgsql(Configuration.GetConnectionString("PostgreSQL")));