Add a "No Nodes above Top Object" export option

I think this should be a checkbox option among the other options: No nodes above top object

When importing the dae made with this exporter, the animation player is child of a spatial node, which is a child of the automatically created root node on import to godot.
root->spatial->armature,animationplayer

When importing dae made with blender's collada exporter, animation player is parented to the armature (like intuition tells me it should; it shortens each track's node path)
root->armature->animationplayer

I cant tell if this is because of how the exporter handles Armatures or Animations. I thought it might be an importer issue, but the blender exporter exports it so its less bloated, so it is probably an exporter issue.

I tried exporting the animation player separately from the armature+mesh, but the bone mapping/ animation is severely distorted