Collapsible Groups

Allow groups to collapse their topology and have them appear as one component. To avoid recreating SvelteFlow edges just for visual representation, another mechanism should be followed, such as: Reset relative coordinates of all nested components, so that they overlay on each other and make them invisible. Then all inter-group connections get terminated on a single [x,y] coordinate. A collapsed group should conditionally show a visual representation that it has been collapsed, such as cloud or box or similar. Collapse controls should be simple = collapse & open (what is the right word for the opposite?).