Replace blog post "Upgrading your .NET projects with Visual Studio" when blog is migrated to docs

For more information see the blog post [Upgrading your .NET projects with Visual Studio](https://devblogs.microsoft.com/dotnet/upgrade-assistant-now-in-visual-studio/).

https://github.com/dotnet/docs/issues/34164 tracks the article

---
#### Document Details

⚠ *Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.*

* ID: 1133d6d1-7801-654c-2b7c-dad2bb342501
* Version Independent ID: a7ccce22-f905-06f4-8847-b9eeaf534e1f
* Content: [Migrate from ASP.NET to ASP.NET Core](https://learn.microsoft.com/en-us/aspnet/core/migration/proper-to-2x/?view=aspnetcore-8.0&branch=pr-en-us-28592)
* Content Source: [aspnetcore/migration/proper-to-2x/index.md](https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/migration/proper-to-2x/index.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-migration**
* GitHub Login: @isaacrlevin
* Microsoft Alias: **riande**
---
#### Document Details

⚠ *Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.*

* ID: 6263e512-7395-7fd1-093c-6bf7dd719179
* Version Independent ID: 6263e512-7395-7fd1-093c-6bf7dd719179
* Content: [Incremental ASP.NET to ASP.NET Core Migration](https://learn.microsoft.com/en-us/aspnet/core/migration/inc/overview?view=aspnetcore-7.0)
* Content Source: [aspnetcore/migration/inc/overview.md](https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/migration/inc/overview.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-migration**
* GitHub Login: @Rick-Anderson
* Microsoft Alias: **riande**