Just press Ctrl+Shift+C (Mac: Cmd+Shift+C) to copy the file in your Editor (the "target" file) and then move over to the file you will be referencing the "target" file and just press Ctrl+Shift+V (Mac: Cmd+Shift+V) to reference the "target" file.
Alternatively, press Ctrl+Shift+A (Mac: Cmd+Shift+A) and type the file in "Quick Pick" mode to reference the "target" file from the active editor.
Simple right? Just to recap
Copy/paste path from external directory
Copy/paste path from same directory
Cached project file lookup from Quick pick. Major refactor.
Add Quick Pick in Active Editor
Minor documentation changes and add GIPHY for demo
Minor documentation changes
Add key bindings for extension
Initial release of relative-import
Feel free to open issues or PRs!