Update controlnet annotator nodes

[tazlin]

Presently hordelib packages nodes for controlnet preprocessing. The inclusion of these nodes dates back to a time where there were limited options for accomplishing this goal. However, if you look closely at these packaged files, they diverge in a few key ways.

• They use absolute hordelib namespaces where previously they would have used their own package namespace.
  • This is in part because these nodes are dynamically loaded by ComfyUI at runtime and ties into the same sort of PYTHONPATH issues that plague this project (due to ComfyUI not being a python library).
• Some bad code to redirect downloads to the AIWORKER_CACHE_HOME dir.
• At least one fix for horrendous performance

I would like to put this particular package to pasture and move on to a more up-to-date version. The same author released this package which, as I understand it, replaces the code base we currently package.

Some thoughts:

• Does the potential replacement package
  • have performance problems?
  • have the ability to be packaged with no further trickery?
    • if not, can we find a way to dynamically inject the code changes that would be required?
  • have a way to avoid downloading files to random locations?
• What pipeline changes are needed?
• How do we bind these new nodes in an extensible way to our code?
  • What are the interfaces now?
  • What are the requirements for directly interacting with any of this code?