Collect All FamilyInstance using Element Types

It is often useful to select only the Family Instances (Component Families) from the current document. This can allow easy access to element parameters, or could even be paired with a Family Location node to then access the point coordinates of all family origins. This node takes no inputs, and runs against the current document. It is a simple wrapper of the Element Types and All Elements of Type Standard Nodes, but it uses less screen real estate and is a good building block for more advanced workflows.