BECDockArea is a widget that encompasses BECDock elements capable of hosting any type of QWidget. The primary objective is to replace the current BECFigure in the BECIPythonClient with BECDockArea. This substitution aims to retain all existing functionalities of BECFigure while introducing dockable capabilities.
refactor(rpc/server): rpc server can accept BEC container class as a argument; the widget container of BECFigure container property s added to BECFigure; isort applied
