Prerequisites

• I have written a descriptive issue title.
• I have searched all issues to ensure it has not already been reported.

Summary

The option to choose between stable and beta releases of PSReadline would be helpful.

Proposed Design

• Install both the latest stable and beta versions of the PSReadline module side by side.
• Add a checkbox in the VSCode options:
  [√] Use PSReadline beta version (default value of "checked")