For many years, animators have been complaining about how keyframing a (transform) property directly would leave them ungrouped, while keyframing them using a Keying Set would put them into a group based on the name of the keyingset. This commit attempts to improve (unify + make consistent) the default behaviour: * All object transforms now get added to an "Object Transforms" group, regardless of whether they were added individually via buttons or keyingset * All bone transforms now get added to a group corresponding to the name of the bone instead of only the ones added via keyingset