Give the possibility di add additional anchor points or edit the existing, for a Perspective component (e.g. pump, valve, vessel, etc) or an SVG, so that piping can piping can be linked tp a specific position of the component/SVG, for example bottom-left, instead of center-left

NOTE: The builtin Perspective Symbol "Vessel" already have 3 anchor points on each side, instead of the 1 as most of the other components. It would be great to have the possibility to add, remove and edit these points