[Feature]: Allow launch code editor for source doc of current page when serving locally

[hamishwillee]

Is your feature request related to a problem? Please describe.

When I am fixing a bug locally it is sometimes hard to find the source document I need to edit. Especially when I have hundreds of pages in my docs.

Describe the solution you'd like

Copy the Mozilla Developer Network solution (yari).

For a locally served page, the top of every page gets a link "Open in code editor". In the source tree you can specify a file .EDITOR, which in my case contains the text code.

When I select the link for a page, VS Code is launched with the source of that page.

This is very much faster than navigating source when I am editing documents and navigating between them.

Describe alternatives you've considered

No response

Additional context

No response

Validations

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• Read the docs.
• Read the Contributing Guidelines.
• Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.