Implement rate limiting and enhance authentication flow

- Added rate limiting configuration for authentication endpoints, allowing customizable request limits via environment variables.
- Updated authentication flow to utilize HttpRequest for cookie management, ensuring secure handling of refresh tokens.
- Introduced a new endpoint to retrieve user subscription details.
- Enhanced the handling of Telegram bot token validation to prevent errors with empty tokens.
- Updated the application to serialize enums as strings for better documentation and compatibility with TypeScript.
- Improved test coverage for new features and adjustments in command handlers.

backend/tests/PnvPanel.Application.Tests/Admin/Inbounds/PublishInboundCommandHandlerTests.cs

@@ -1,4 +1,6 @@
+using NSubstitute;
 using PnvPanel.Application.Admin.Inbounds;
+using PnvPanel.Application.Common.Interfaces;
 using PnvPanel.Application.Tests.TestSupport;
 using PnvPanel.Domain.Inbounds;
 using Xunit;
@@ -7,6 +9,8 @@ namespace PnvPanel.Application.Tests.Admin.Inbounds;
 
 public class PublishInboundCommandHandlerTests
 {
+    private readonly ICurrentUser _currentUser = Substitute.For<ICurrentUser>();
+
     [Fact]
     public async Task Handle_WhenPublishingExistingInbound_UpdatesPublishState()
     {
@@ -16,7 +20,7 @@ public class PublishInboundCommandHandlerTests
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
         var roleId = Guid.NewGuid();
-        var handler = new PublishInboundCommandHandler(dbContext);
+        var handler = new PublishInboundCommandHandler(dbContext, _currentUser);
 
         var command = new PublishInboundCommand(inbound.Id, true, "EU Fast", [roleId], 100);
 
@@ -39,7 +43,7 @@ public class PublishInboundCommandHandlerTests
         dbContext.Inbounds.Add(inbound);
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
-        var handler = new PublishInboundCommandHandler(dbContext);
+        var handler = new PublishInboundCommandHandler(dbContext, _currentUser);
 
         var command = new PublishInboundCommand(inbound.Id, false, null, [], null);
 
@@ -54,7 +58,7 @@ public class PublishInboundCommandHandlerTests
     {
         using var dbContext = InMemoryDbContextFactory.Create();
 
-        var handler = new PublishInboundCommandHandler(dbContext);
+        var handler = new PublishInboundCommandHandler(dbContext, _currentUser);
 
         var command = new PublishInboundCommand(Guid.NewGuid(), true, "EU Fast", [], null);