Centralization of Blender events

Слиты nikitronn запросил слияние centralization_of_events в master

Created by: Durman

Addressed problem description

#3077 (closed)

Goal of this PR is to develop the idea of tracking events for debug purposes. It should print events in console in Debug mode like that:

EVENT: node_update               IN: SvLineNodeMK4             INSTANCE: Line
EVENT: node_tree_update          IN: SverchCustomTreeType      INSTANCE: NodeTree

Preflight checklist

  • Code changes complete.
  • Manual testing done.
  • Ready for merge.