[UI] Review process tree’s organization and naming

[HugoGenillier]

It might be hard and time consuming to find the right tools for your project. The organization and names are sometimes misleading or doesn't fit user's way of thinking which leads them to spent time groping their way to the process they need.

The process tree is extensive and keeps growing. The categorization should be studied to ensure it makes sense for every users, overall process needs to be more explicit which implies to always have well detailled description or preview upon selection (bottom left).

This recommandation is important but requieres a work on coherence since processes can be added by the community or comes from various libraries. Also this may imply a more in depth study on terminology used by users to find the right categorization.

[jcelerier]

for this we should look into how it works in other systems. For instance how do people find objects in Max, TD, PlugData, Usine...