Lazy connect nodes

Feature to connect two nodes without clicking the sockets directly.
Hold the modifier key then click and drag from one node to another, the nodes nearest the start and end points will be selected.
Sockets are selected based on similar types or order priority.

Blender has this feature https://docs.blender.org/manual/en/latest/addons/node/node_wrangler.html#lazy-connect
Blender uses `Alt-RMB` shortcut

Node selection in Blender

https://github.com/user-attachments/assets/e9ca6570-218b-4ad4-b8ff-b218055070eb

Socket selection

https://github.com/user-attachments/assets/4d00140e-9a1c-4e15-aeb9-b45b79cda32f

未指定文件、测试或入口点。从链接的 Blender lazy-connect 参考开始，跟踪节点编辑器的拖动和套接字选择入口；完成的标准是 modifier-drag 连接最近的节点，并按类型或优先级选择兼容的套接字。

由索引模型根据 Issue 内容生成。