Refactor BotBuilder and enhance TelegramServerBuilder

- Added service registration for IHostApplicationLifetime in BotBuilder.cs to manage application lifetime events.
- Updated documentation for the BotBuilder constructor to clarify its intended use in ASP.NET Core applications.
- Removed previous registration of IHostApplicationLifetime, indicating a refactor of service registrations.
- Introduced UseConfiguration property in TelegramServerBuilder.cs to enhance configurability of the Telegram API base URL.

Author: bvdcode

Sources/TelegramBot/Builders/BotBuilder.cs

@@ -60,10 +60,12 @@ public BotBuilder(params string[] args)
             Logging = new TelegramLoggerBuilder(Services);
             Services.AddSingleton(Configuration);
             Services.AddSingleton<IConfiguration>(Configuration);
+            Services.AddSingleton<IHostApplicationLifetime, HostApplicationLifetime>();
         }
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="BotBuilder"/> class with preconfigured defaults.
+        /// Initializes a new instance of the <see cref="BotBuilder"/> class with preconfigured defaults. <br/>
+        /// Supposes to be used in ASP.NET Core applications with <see cref="IHostApplicationBuilder"/>.
         /// </summary>
         /// <param name="hostBuilder">The host application builder.</param>
         /// <returns>The <see cref="BotBuilder"/>.</returns>
@@ -186,7 +188,6 @@ public IBot Build()
             {
                 Services.AddSingleton<IKeyValueProvider, InMemoryKeyValueProvider>();
             }
-            Services.AddSingleton<IHostApplicationLifetime, HostApplicationLifetime>();
             Services.AddHostedService<TelegramBotHostedService>();
             Services.AddSingleton(_botConfiguration);
             Services.AddSingleton<BotControllerMethodsContainer>();

Sources/TelegramBot/Builders/TelegramServerBuilder.cs

@@ -10,6 +10,9 @@ public class TelegramServerBuilder
         /// </summary>
         public string? BaseUrl { get; set; }
 
+        /// <summary>
+        /// Indicates whether to use the configuration value CustomTelegramApiUrl as the base URL.
+        /// </summary>
         internal bool UseConfiguration { get; private set; }
 
         /// <summary>