Dnd support on desktop

[techno-disaster]

Flutter desktop drag and drop support with https://pub.dev/packages/desktop_drop

[AshishSingh2001]

Hey, I would like to work on this issue.

[manoj1749]

• Hey @techno-disaster , I had made a PR Added Drag And Drop Support For The Desktop Application #41 which solves this issue
• Can you review it once?

[manoj1749]

• This Issue can be close as it is solved with the pr Added Drag And Drop Support For The Desktop Application #41