[FEATURE]: Generate .gif animation files

[MarwinNumbers]

Is your feature request related to a problem? Please describe.
As I worked through the examples, I quickly came to the point where I wrote a short script to generate .gif animation files out of sample collections. That was very helpful to gain intuition for the multiple parameters you can adjust and what the whole pipeline is about. The motivation raised primarily from the advertising animation of the home page, since it was the first goal in the walk-through to get close to advertised promise.

Besides gaining intuition and testing settings, it is also a great format to use later on for presentations, since the file handling is extremely easy and highly compatible with most types of media.

Describe the solution you'd like
It would be great if there is simple one line statement to write the .png files from the render process straight to the gif files, since it took me for each setting unnecessary minutes to extract the hdf5 containers and then run my additional script.

Additional context
To give a better idea what I have done externally, here are some examples. At one, you can see tests for camera positions and light, in the other the adjustment of the depth field.

[themasterlink]

Hey,

I like the idea. We should integrate this.

Best,
Max