[Other]: Experiment with agentic descriptor metadata collection

[nx10]

Summary

Experiment with MPC server which runs in or sends commands to docker container to collect app metadata

Description

• One-shot descriptor generation from help text previously helped "batch bootstrap" a lot of the AFNI+FSL descriptors
• Similarly running an agent which can furthermore
  • actually execute the apps
  • dig through app source code
• may improve descriptor accuracy (especially often not documented "output-files"-relationships)
• provide a path to semi-automatically detect changes in interfaces as publishers release new package versions

This is an open-ended issue and may be closed/replaced once we feel like we have experimented enough