chore: Update xUnit related packages version to v3

[filzrev]

This is Draft PR to migrate unit test projects to xUnit v3.
(xUnit v3 is expected to be released in the near future)

What's changed to this PR

1. Switch xUnit.NET related NuGet packages to v3.

• Verify.Xunit -> Verify.XunitV3
• xunit -> xunit.v3

2. Add additional output log types (*.log/*.ctrf)

3. Change unittest's projects OutputType from LibrarytoExe`.

4. Enable Invariant Globalization mode for test projects.
xUnit.v3 run unit tests as standard exe.
So it can configure setting with InvariantGlobalization MSBuild property.

5. Add Microsoft.Testing.Platform related settings
Microsoft.Testing.Platform is alternative unit test execution layers.
Currently It' used when running tests with following ways.

• When running test with dotnet test command.
• When running tests with Visual Studio Preview.

6.Add xunit.runner.json config file for test project.

7.Pass TestContext.Current.CancellationToken that require Cancellation token.

8.Modify MetadataCommandTest.cs And add steps to create dummy Directory.Build.props file.