Create aspnetcore-10.0.md (#34624)

* Create aspnetcore-10.0.md

* Add link to ASP.NET Core announcement page

* Apply suggestions from code review

Co-authored-by: Tom Dykstra <tdykstra@microsoft.com>

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Co-authored-by: Tom Dykstra <tdykstra@microsoft.com>

Author: Rick-Anderson

aspnetcore/release-notes/aspnetcore-10.0.md

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+---
+title: What's new in ASP.NET Core 10.0
+author: rick-anderson
+description: Learn about the new features in ASP.NET Core 10.0.
+ms.author: riande
+ms.custom: mvc
+ms.date: 2/5/2025
+uid: aspnetcore-10
+---
+# What's new in ASP.NET Core 10.0
+
+This article highlights the most significant changes in ASP.NET Core 10.0 with links to relevant documentation.
+
+This article will be updated as new preview releases are made available. See the [Asp.Net Core announcement page](https://github.com/aspnet/announcements/issues?q=is%3Aopen+is%3Aissue+milestone%3A1.0.0-rc2) until this page is updated.
+
+<!-- New content should be added to ~/aspnetcore-9/includes/newFeatureName.md files. This will help prevent merge conflicts in this file. -->
+
+## Blazor
+
+This section describes new features for Blazor.
+
+## SignalR
+
+This section describes new features for SignalR.
+
+## Minimal APIs
+
+This section describes new features for minimal APIs.
+
+## Authentication and authorization
+
+This section describes new features for authentication and authorization.
+
+## Miscellaneous
+
+This section describes miscellaneous new features in ASP.NET Core 9.
+
+## Related content