Added empty placeholder unit back into src directory.
Added empty placeholder unit back into src directory.

This unit will later contain the TfpgCommonStyle (currently known
as TfpgStyle) code.

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