can you please add fold/un-fold keyboard shortcut ?

I really like you ctrl+D shortcut that select the same text on whole json but its get difficult to fold/un-fold the large json it would be easut if can add a keyboard short to fold current parent tree item

also add the fold/un-fold toolbar button in text view please

Start by locating the existing Ctrl+D shortcut and the text view toolbar in the TypeScript editor code. Determine how the current parent tree item is identified and where toolbar actions are registered; done means both fold and unfold are available through a keyboard shortcut and visible toolbar control.

Written by the indexing model from the issue text.