Particle system to geometry nodes

Blender's particle system is able to support many usecases. With the inception of the geometry nodes , Blender's particle system got new abilities, eg. nested particle systems or seamlessly combining a particle system with mesh modification.

It comes at a cost of operating on a lower level of abstraction: to reproduce settings which were easy to do using a particle systems modifier, one now needs to learn to use many of the geometry nodes settings and ways to combine them.

I propose to introduce a way to convert a current particle system to a geometry nodes one without changing its behavior: this way, a user familiar with particle systems or using a legacy system based on particle systems (eg. a popular modular tree addon ) could benefit from the geometry nodes without having to reproduce the particle systems defaults.