Fix up packaging for Extensions.ApiDescription.Server

[captainsafia]

Description

This change fixes up the package of dependencies for the dotnet-getdocument tool to enable changes that were made to support minimal APIs in .NET 7.

• Publish GetDocument.Insider dependency for all .NET Core TFMs
• Use targeted referenced to shared runtime dependencies in GetDocument.Insider
• Add .NET 7 outputs to ApiDescription.Server package.

Fixes https://github.com/dotnet/aspnetcore/issues/44119

Customer Impact

Without this bug fix, customers are not able to leverage client generation for ASP.NET apps in Visual Studio for .NET 7 applications. There are no accessible workarounds for this bug.

Regression?

• [X] Yes
• [ ] No

Regression from .NET 7 RC 1. The bug is present in .NET 7 RC 2 and this PR is targeting .NET 7 GA.

Risk

• [ ] High
• [ ] Medium
• [X] Low

Change is localized to Extensions.ApiDescription.Server.

Verification

• [X] Manual (required)

Manual validation was completed by adding a reference to the local package output directory aspnetcore\artifacts\packages\Debug\Shipping and using the 7.0.0-dev version of the Microsoft.Extensions.ApiDescription.Server package in a sample project.

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net7.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <OpenApiGenerateDocumentsOnBuild>true</OpenApiGenerateDocumentsOnBuild>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
    <PackageReference Include="Microsoft.Extensions.ApiDescription.Server" Version="7.0.0-dev" PrivateAssets="all" />
    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.0-*" PrivateAssets="all" />
  </ItemGroup>

</Project>

• [ ] Automated

Packaging changes reviewed?

• [X] Yes
• [ ] No
• [ ] N/A

[ghost]

Hi @captainsafia. Please make sure you've updated the PR description to use the Shiproom Template. Also, make sure this PR is not marked as a draft and is ready-to-merge.

To learn more about how to prepare a servicing PR click here.

[captainsafia]

Closing in favor of automerge from RC2.