Is your feature request related to a problem? Please describe.
With the part/part of ; directive quick fix feature, I sometimes expect the export directive to also have Create file 'path'; option in its quick fix menu.

Describe the solution you'd like
When the target URI doesn't exist (uri_does_not_exist) for an export directive, there should be a quick fix option: Create file 'path'.

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered.

Additional context

No Create file 'bar.dart;' in Quick Fix menu.

But should create a file like: