[FEATURE REQ] Make Shell tool classes public

[dmytrostruk]

Describe the feature or improvement you are requesting

Make shell tool classes public so it's possible to use it with Responses API:
https://github.com/openai/openai-dotnet/blob/main/src/Generated/Models/Responses/InternalLocalShellTool.cs

Additional context

No response

[jsquire]

Corresponds to the bult-in "LocalShell" tool in the platform docs. REST API spec line 69,771:

LocalShellToolParam:
  properties:
    type:
      type: string
      enum:
        - local_shell
      description: The type of the local shell tool. Always `local_shell`.
      default: local_shell
      x-stainless-const: true
  type: object
  required:
    - type
  title: Local shell tool
  description: >-
    A tool that allows the model to execute shell commands in a local
    environment.

[dmytrostruk]

@jsquire OpenAI has both local and hosted shell, it would be great if both options are public, thanks!