message: Added Extract to CodeBehind Code Action to ChangeLog
diff: * Various performance improvements.
  * `@inject` completion [aspnetcore#22886](https://github.com/dotnet/aspnetcore/issues/22886)
  * Improved behavior in cases where directory is not available. [dotnet/aspnetcore-tooling#2008](https://github.com/dotnet/aspnetcore-tooling/pull/2008)
  + * Added the `Extract to CodeBehind` light bulb code action. [dotnet/aspnetcore-tooling#2039](https://github.com/dotnet/aspnetcore-tooling/pull/2039)
  ## 1.22.0 (May 28, 2020)
  * Add setting for enabling go to decompilation (PR: [#3774](https://github.com/OmniSharp/omnisharp-vscode/pull/3774))
  