For now, it's not possible to create new tracks, the parameter or block of an element needs to be already in the timeline
elementTracks and parameterTracks
In this script below we first assign the main timeline to "t"
and then we iterate onto the elementTracks and parameterTracks to list them
One you know how to parse the blocks and keyframes you can start to
Timeline Manipulation with Python
Create move edit Block and Keyframe inside Timeline