Rigify should with nodes instead of the script

Currently rigify is generating rig based on python script, so if someone customise the script, they have to learn python , which is going to be really hard to learn. But when in its comes to visual scripting it would a problem, because blender users already familiar with node based workflows.

If there is any error while generating the rig, they can just make changes in node to fix that!!! Also artist can break rules of sample bones, like if you delete ears in head sample, the rig with not be generated!!!