Support camera animation tilt controls

[slimbuck]

This has been requested by https://superspl.at/user?id=schindelar3d

Along with tilt we could consider adding:

• per-key fov
• smoothness controls for the entire camera animation

[nancywan1004]

Hi there,

I wonder if this is going to be implemented soon? I'd also be interested in editing existing keyframes, like dragging it back and forward, and perhaps visualizing the positions of them in the scene.

Would appreciate it! :)

EDIT: I'm also attaching an ideal reference from Luma AI.