Used to build the scene mesh for particles' collisions (see How To Setup Particle Collisions).
Upon pressing Build Meshes, will recursively look for Mesh colliders in the GameObjects listed in Game Objects To Search.
The collected colliders' data is then written at Output Pkmm Path (relative to PackFX' root).
Path relative to the PackFx root to the built scene mesh.
A list of GameObjects to be recursively searched for MeshFilter components from which a scene mesh is built and saved at OutputPkmmPath.