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.Application/Admin/News/CreatePostCommandHandler.cs

@@ -6,15 +6,26 @@ using PnvPanel.Domain.News;
 
 namespace PnvPanel.Application.Admin.News;
 
-public sealed class CreatePostCommandHandler(IAppDbContext dbContext, IRealtimeNotifier notifier, ITelegramNotifier telegramNotifier)
-    : ICommandHandler<CreatePostCommand, Result<NewsPostDto>>
+public sealed class CreatePostCommandHandler(
+    IAppDbContext dbContext,
+    IRealtimeNotifier notifier,
+    ITelegramNotifier telegramNotifier
+) : ICommandHandler<CreatePostCommand, Result<NewsPostDto>>
 {
-    public async Task<Result<NewsPostDto>> Handle(CreatePostCommand command, CancellationToken cancellationToken)
+    public async Task<Result<NewsPostDto>> Handle(
+        CreatePostCommand command,
+        CancellationToken cancellationToken
+    )
     {
         var post = NewsPost.Create(command.Title, command.Body);
         dbContext.NewsPosts.Add(post);
 
-        await notifier.NotifyNewsPublishedAsync(post.Id, post.Title, post.CreatedAt, cancellationToken);
+        await notifier.NotifyNewsPublishedAsync(
+            post.Id,
+            post.Title,
+            post.CreatedAt,
+            cancellationToken
+        );
         await telegramNotifier.NotifyUsersNewsPublishedAsync(post.Title, cancellationToken);
 
         return Result.Success(NewsPostDto.FromDomain(post));