8ca5887c20
- `anchor` determines the point of wrench application, in the frame of body2. - `tfratio` scales applied torques relative to applied forces. - Add visualisation of both anchor points to both weld and connect constraints. - Add a test model showing how the new weld parameters behave. PiperOrigin-RevId: 469190483 Change-Id: I20f6da85b09cd2c4c0b5d29eb8003eabb524e55e