Add advanced keyframe editing and camera trajectory tools

Would be great to replicate the functionality of the Lumalabs.ai Fields Editor:

• Timeline extends when 'add keyframe' is selected when playhead is at end
• Cameras and path are visible,
• and when keyframes are selected, they can be moved on the timeline <-> or edited manually
• comprehensive camera editor with sliding values (left-click mouse hover over number entry field and move left/right to change values)
• 'prefab' trajectories
• import/export camera path (for virtual production) or at least, to begin with, the ability to 'select previous/next keyframe' with either [shift] + [left arrow] or similar. Thank you for considering, keep up the good work!