VTK output teaser

[slayoo]

@atmos-cloud-sim-uj/pysdm-users
Here is a teaser of what the VTK particle output for PSDM will enable us to obtain using, e.g., Paraview:

sd_anim1.mp4

Kudos to @abulenok for getting it up and running!
Stay tuned for a new release soon with many new features.

[trontrytel]

@slayoo and @abulenok This is really cool! Great progress