Hide extension button when embedded in an IDE (#9956)
* Hide the extension settings action when DevTools is running in an IDE.
Fixes https://github.com/flutter/devtools/issues/8507
* Ensure that the extensions action is displayed when showing an
extension on screen, even when embedded in an IDE.
* Replace https://flutter.dev/ with a data placeholder in
_controller_web.dart to prevent browser X-Frame-Options
iframe errors during local debugging.
* Add debugging devtools extensions skill
* add to release notes
* format
* Apply suggestions from code review
Co-authored-by: Kenzie Davisson <43759233+kenzieschmoll@users.noreply.github.com>
* Use OS-based browser opening commands
* Refactor HTML into a function
* remove embedMode information from skill, since it's unrelated
* Extract conditionals into local variable
* Use isEmbedded() to ensure that embedMode=One or embedMode=Many are allowed
* format
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Co-authored-by: Kenzie Davisson <43759233+kenzieschmoll@users.noreply.github.com>
