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/tests/PnvPanel.Application.Tests/Configs/GetMyConfigs/GetMyConfigsQueryHandlerTests.cs

@@ -27,16 +27,35 @@ public class GetMyConfigsQueryHandlerTests
         var activeConfig = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, "Active");
         var revokedConfig = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, "Revoked");
         revokedConfig.Revoke();
-        var otherUsersConfig = VpnConfig.Create(otherUserId, inbound.Id, VpnProtocol.Vless, "Other");
+        var otherUsersConfig = VpnConfig.Create(
+            otherUserId,
+            inbound.Id,
+            VpnProtocol.Vless,
+            "Other"
+        );
 
         dbContext.Inbounds.Add(inbound);
         dbContext.VpnConfigs.AddRange(activeConfig, revokedConfig, otherUsersConfig);
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
-        var profile = new CurrentUserProfile(userId, "alice", Guid.NewGuid(), "user", true, false, 5, RoleQuota.Unlimited, "sub-token");
+        var profile = new CurrentUserProfile(
+            userId,
+            "alice",
+            Guid.NewGuid(),
+            "user",
+            true,
+            false,
+            5,
+            RoleQuota.Unlimited,
+            "sub-token"
+        );
         _identityService.GetProfileAsync(userId, Arg.Any<CancellationToken>()).Returns(profile);
 
-        var handler = new GetMyConfigsQueryHandler(dbContext, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new GetMyConfigsQueryHandler(
+            dbContext,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
         var result = await handler.Handle(new GetMyConfigsQuery(), CancellationToken.None);
 
@@ -51,7 +70,11 @@ public class GetMyConfigsQueryHandlerTests
     {
         using var dbContext = InMemoryDbContextFactory.Create();
 
-        var handler = new GetMyConfigsQueryHandler(dbContext, _identityService, FakeCurrentUser.Anonymous());
+        var handler = new GetMyConfigsQueryHandler(
+            dbContext,
+            _identityService,
+            FakeCurrentUser.Anonymous()
+        );
 
         var result = await handler.Handle(new GetMyConfigsQuery(), CancellationToken.None);
 
@@ -64,9 +87,15 @@ public class GetMyConfigsQueryHandlerTests
     {
         using var dbContext = InMemoryDbContextFactory.Create();
         var userId = Guid.NewGuid();
-        _identityService.GetProfileAsync(userId, Arg.Any<CancellationToken>()).Returns((CurrentUserProfile?)null);
+        _identityService
+            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
+            .Returns((CurrentUserProfile?)null);
 
-        var handler = new GetMyConfigsQueryHandler(dbContext, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new GetMyConfigsQueryHandler(
+            dbContext,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
         var result = await handler.Handle(new GetMyConfigsQuery(), CancellationToken.None);