Refactor project files for improved readability and structure

- Cleaned up whitespace in Directory.Build.props and Directory.Packages.props for consistency.
- Reformatted project file references in PnvPanel.Api.csproj for better clarity.
- Enhanced code readability in various endpoint files by adjusting line breaks and indentation.
- Standardized method signatures and improved formatting in ResultExtensions and multiple endpoint classes for better maintainability.

backend/src/PnvPanel.Api/Telegram/TelegramBotHostedService.cs

@@ -13,9 +13,11 @@ namespace PnvPanel.Api.Telegram;
 /// вызывает те же CQRS-команды, что и веб, через собственный ISender.
 /// </summary>
 public sealed class TelegramBotHostedService(
-    ITelegramBotClient botClient, PnvBotUpdateHandler updateHandler, IOptions<TelegramOptions> options,
-    ILogger<TelegramBotHostedService> logger)
-    : BackgroundService
+    ITelegramBotClient botClient,
+    PnvBotUpdateHandler updateHandler,
+    IOptions<TelegramOptions> options,
+    ILogger<TelegramBotHostedService> logger
+) : BackgroundService
 {
     private static readonly TimeSpan RetryDelay = TimeSpan.FromSeconds(30);