Add admin configs endpoint and related UI components

- Introduced a new endpoint to list all admin configs, enhancing the admin interface for better management.
- Updated API documentation to include the new `/configs` endpoint with pagination and search capabilities.
- Added routing and UI elements for the configs section in the admin panel, improving navigation and accessibility.
- Enhanced localization for the configs feature in both Russian and English, ensuring a user-friendly experience.

backend/src/PnvPanel.Api/Endpoints/AdminUserEndpoints.cs

@@ -1,9 +1,11 @@
 using PnvPanel.Api.Common;
+using PnvPanel.Application.Admin.Configs;
 using PnvPanel.Application.Admin.Users;
 using PnvPanel.Application.Common.Interfaces;
 using PnvPanel.Application.Common.Messaging;
 using PnvPanel.Application.Common.Models;
 using PnvPanel.Application.Configs;
+using PnvPanel.Domain.Configs;
 using PnvPanel.Infrastructure.Identity;
 
 namespace PnvPanel.Api.Endpoints;
@@ -22,6 +24,7 @@ public static class AdminUserEndpoints
         admin.MapPost("/users/{id:guid}/reset-password", ResetPassword).Produces(StatusCodes.Status204NoContent);
         admin.MapDelete("/users/{id:guid}", DeleteUser).Produces(StatusCodes.Status204NoContent);
         admin.MapGet("/users/{id:guid}/configs", GetUserConfigs).Produces<IReadOnlyList<VpnConfigDto>>();
+        admin.MapGet("/configs", ListAllConfigs).Produces<PagedList<AdminVpnConfigDto>>();
         admin.MapDelete("/configs/{id:guid}", ForceRevokeConfig).Produces(StatusCodes.Status204NoContent);
 
         return app;
@@ -65,6 +68,14 @@ public static class AdminUserEndpoints
         return result.ToHttpResult();
     }
 
+    private static async Task<IResult> ListAllConfigs(
+        int page, int pageSize, string? search, ConfigStatus? status, ISender sender, CancellationToken cancellationToken)
+    {
+        var query = new ListAllConfigsQuery(page <= 0 ? 1 : page, pageSize <= 0 ? 20 : pageSize, search, status);
+        var result = await sender.Send(query, cancellationToken);
+        return result.ToHttpResult();
+    }
+
     private static async Task<IResult> ForceRevokeConfig(Guid id, ISender sender, CancellationToken cancellationToken)
     {
         var result = await sender.Send(new ForceRevokeConfigCommand(id), cancellationToken);