[Feature]: Smart Connectors for Shapes (Lines that Stretch and Bend)
### What's the feature?

Hi, 

I just started using tldraw, and I have a feature suggestion. Currently, when I draw a line between two shapes (e.g., a box and another box), the line does not stay connected when I move the shapes. It would be great to have a "smart connector" feature similar to PowerPoint where:

Lines automatically attach to shapes and follow them when moved.
The line bends and stretches dynamically instead of just moving with the shape.
Connectors snap to the nearest edge or anchor points for more intuitive positioning.

Right now, I can manually adjust the lines, but having dynamic connections would make workflows much smoother, especially for flowcharts, mind maps, and diagrams.

### Where would you like this feature?

The tldraw.com website

### Contact Details

_No response_

### Code of Conduct

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