[feature] allow to reorder keys in a page

[willianrod]

Description

When creating my page, sometimes I found myself in need to move one existing key to another position. Right now, this is not possible and would be really cool to have this feature.

Requirements

• When clicking and dragging an existing key and moving around, a "ghost" element following the cursor should appear
• When dropping the key, you should validate if the target is not already occupied. If not, then update the dragging key to the new position

[EduardoJM]

Hi @willianrod,

can i work on this issue?

[willianrod]

For sure. I'll assign you