Link Shapes

[monsterfox]

This feature should add two operation modes: 1. The parent object can control all child objects. 2. Any child object can control the global object. These two modes should offer five transformation properties for free selection (Move, Rotate, Scale, Skew, Mirror), so as to adapt to more work scenarios.

Two minor details: 1. When any linked shape is moved and duplicated, the new object should also have the linking function. 2. When any shape is grouped with a linked shape, the other linked graphics should not be able to control it.

If this feature can be developed, VS will become more user-friendly and powerful. Hope this feature can be added.

[VectorStyler]

@monsterfox This will need some clarification (later)