Implement role and user management enhancements

- Added MaxIpLimit to roles, allowing for the configuration of simultaneous IP limits for users.
- Updated role creation and update commands to include MaxIpLimit, ensuring proper handling in the application logic.
- Enhanced user management by introducing a DELETE endpoint for user accounts, with appropriate checks to prevent self-deletion.
- Updated documentation to reflect changes in role and user management, clarifying the new IP limit functionality and user deletion process.
- Adjusted related tests to cover new functionality and ensure robust validation of role and user management features.

backend/src/PnvPanel.Application/Common/Interfaces/IRoleService.cs

@@ -2,13 +2,13 @@ using PnvPanel.Application.Common.Models;
 
 namespace PnvPanel.Application.Common.Interfaces;
 
-public sealed record RoleDto(Guid Id, string Name, int MaxConfigs, bool IsSystem);
+public sealed record RoleDto(Guid Id, string Name, int MaxConfigs, int MaxIpLimit, bool IsSystem);
 
 public interface IRoleService
 {
-    Task<Result<RoleDto>> CreateRoleAsync(string name, int maxConfigs, CancellationToken cancellationToken);
+    Task<Result<RoleDto>> CreateRoleAsync(string name, int maxConfigs, int maxIpLimit, CancellationToken cancellationToken);
 
-    Task<Result<RoleDto>> UpdateRoleAsync(Guid roleId, int maxConfigs, CancellationToken cancellationToken);
+    Task<Result<RoleDto>> UpdateRoleAsync(Guid roleId, int maxConfigs, int maxIpLimit, CancellationToken cancellationToken);
 
     Task<Result> DeleteRoleAsync(Guid roleId, CancellationToken cancellationToken);