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/Support/TicketAuthorization.cs

@@ -9,5 +9,6 @@ internal static class TicketAuthorization
     private const string AdminRoleName = "admin";
 
     public static bool IsAdmin(CurrentUserProfile? profile) =>
-        profile is not null && profile.Role.Equals(AdminRoleName, StringComparison.OrdinalIgnoreCase);
+        profile is not null
+        && profile.Role.Equals(AdminRoleName, StringComparison.OrdinalIgnoreCase);
 }