Make SOFADistanceGrid plugin great (again?)

[epernod]

Problem in SOFADistanceGrid plugin

Description

1. The plugin seems a bit dusty. New factory registration pattern to apply. See for example:
   Apply new factory registration mechanism + refresh BeamAdapter#162

2. Component FFDDistanceGridCollisionModel seems not to work with FreeMotionAnimationLoop

3. Example DistanceGridForceField-liver.scn is not working anymore because file: mesh/cubeDistanceGrid.fmesh is missing

Would be good to clean the plugin code and add new examples.

[epernod]

you are lucky @th-skam I can't assign you the issue 😆