Добавьте файлы проекта.

Telegrator.Hosting/Components/IPreBuildingRoutine.cs

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+namespace Telegrator.Hosting.Components
+{
+    /// <summary>
+    /// Interface for pre-building routines that can be executed during host construction.
+    /// Allows for custom initialization and configuration steps before the bot host is built.
+    /// </summary>
+    public interface IPreBuildingRoutine
+    {
+        /// <summary>
+        /// Executes the pre-building routine on the specified host builder.
+        /// </summary>
+        /// <param name="hostBuilder">The host builder to configure.</param>
+        public static abstract void PreBuildingRoutine(TelegramBotHostBuilder hostBuilder);
+    }
+}

Telegrator.Hosting/Components/ITelegramBotHost.cs

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+using Microsoft.Extensions.Hosting;
+using Telegrator;
+
+namespace Telegrator.Hosting.Components
+{
+    /// <summary>
+    /// Interface for Telegram bot hosts.
+    /// Combines host application capabilities with reactive Telegram bot functionality.
+    /// </summary>
+    public interface ITelegramBotHost : IHost, IReactiveTelegramBot
+    {
+
+    }
+}

Telegrator.Hosting/Components/ITelegramBotHostBuilder.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Telegrator.MadiatorCore;
+
+namespace Telegrator.Hosting.Components
+{
+    /// <summary>
+    /// Interface for building Telegram bot hosts with dependency injection support.
+    /// Combines host application building capabilities with handler collection functionality.
+    /// </summary>
+    public interface ITelegramBotHostBuilder : ICollectingProvider
+    {
+        /// <summary>
+        /// Gets the set of key/value configuration properties.
+        /// </summary>
+        IConfigurationManager Configuration { get; }
+
+        /// <summary>
+        /// Gets a collection of logging providers for the application to compose. This is useful for adding new logging providers.
+        /// </summary>
+        ILoggingBuilder Logging { get; }
+
+        /// <summary>
+        /// Gets a collection of services for the application to compose. This is useful for adding user provided or framework provided services.
+        /// </summary>
+        IServiceCollection Services { get; }
+    }
+}