Fix URDFs with proxy inertia for simulation
Required for the MEMMO deliverable D3.3
This adds minor inertia and fixes the URDFs for simulation with PyBullet
Also applied XML formatting to the ANYmal-Kinova URDF
Required for the MEMMO deliverable D3.3
This adds minor inertia and fixes the URDFs for simulation with PyBullet
Also applied XML formatting to the ANYmal-Kinova URDF