Enable DnD for GcodeEditor
Summary:
Add signal to pass droppedUrls
Connect the gcodeWidgets droppedUrls
Resolves T8913
Reviewers: laysrodrigues, tcanabrava, patrickelectric, leandrosantiago
Reviewed By: tcanabrava
Subscribers: leandrosantiago, Atelier: General Development
Tags: Atelier: General Development
Maniphest Tasks: T8913
Differential Revision: https://phabricator.kde.org/D13929