Update mujoco K1 model to updated feet #2135
Description
We have a newer K1 mojoco model with updated feet. The current model in tools/mujoco-simulator/mujoco-simulator/K1 therefore needs to updated.
If you want to do this, ping @alexschmander or @schluis. I am not sure currently, if I am allowed to simply upload the model file here publicly.
Thanks @philipniklas-r for sharing the model!
While your at it, you could also change the naming of the shoulder/elbow joints in the xml file to be consistent with the naming in out framework (the K1 doesn't really have two elbow joints, but three shoulder joints and one elbow joint).