Add option to choose cursor position in Circular Path mode on Path Generator

[D3mh4]

Currently, in Circular Path mode, the cursor is fixed at the center of the circle. To increase flexibility and better match advanced use cases, users should be able to select where the cursor is positioned relative to the moving source.

This feature would introduce three options:

Center (default): Cursor stays in the middle of the circle.

Start: Cursor follows the starting point of the circular path (e.g., right side of the circle at 0°).

Intersection: Cursor is placed at a shared point between multiple overlapping circular paths, useful for synchronized or symmetrical motion (e.g., flower-like structures).