User Story

As a user,
I want to see the output of a Playground in the code editor
So that it's syntax highlighted and easier to read and easier to scroll and copy-paste

Acceptance Criteria

• When I run a playground, its output is displayed in a code editor, with language set to JSON if the result is representable as JSON, plain text otherwise.
• When VS Code is not already in split view mode, the results are opened in a new editor tab split on the right of the playground
• Playground results are always displayed in the same code editor, no matter how many times I run one or more playground
• Results are not editable. If the user wants to edit them, they have the option to save the results to a file (Save as, Cmd + Shift + S) and edit that

Open questions

• When VS Code is already in split view mode, where do we open the new editor with the results?
  • The default behavior is probably fine, but let's verify.
• Can we tell what type of results are being displayed, e.g. if it's a string or JSON? Plain text in a JSON editor is displayed with errors, for example.
  • Yes