Make Triple Slash Comments Source of Truth

Currently we need to manually port any new documentation to the dotnet-api-docs repo when it comes time to documenting new APIs that have been added in the release cycle. We should investigate making our source code documentation the source of truth so that we reduce the manual effort that occurs when it comes time to documenting new APIs for the release cycle.

In runtime repo, this has already been achieved for some projects by creating a [transport package](https://github.com/dotnet/runtime/blob/eb14da93fe4fd29cc80eba6b12c6452ea10d166e/src/libraries/Microsoft.Internal.Runtime.DotNetApiDocs.Transport/src/Microsoft.Internal.Runtime.DotNetApiDocs.Transport.proj) that automatically pushes the ref assemblies and the intellisense files to a feed where the dotnet-api-docs repo consumes that package to update the Microsoft Learn website.