ide: Adds the ability to add a new empty unit
ide: Adds the ability to add a new empty unit

The new unit will be based on the ${templates}/default/unit.pas file.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI