Add camera animation capabilities (anime.js)

[cgcostume]

Interface for capturing, serializing, and replaying camera settings.

• manually capture keyframes with camera eye, center, fov
• automaticall capture keyframes ...
• specify replay by means of duration between frames, ease-in/ease-out functions, interpolation method, etc.
• passive replay by querying interpolated data for certain point in time or position in-between

As originally intended in webgl-operate we could generalize this interface to a DataCapture and DataReplay class... but perhaps we could rely on anime.js instead.

Inspiration:

• https://www.youtube.com/watch?v=UIwdCN4dV6w
• https://www.youtube.com/watch?v=lX6JcybgDFo
• https://youtu.be/TI4PXFUOPR8?t=55 (bis 1:05)

@lukaswagner - you have the most experience here so far. Please feel free to comment on or refine this issue.