Draft: Add py-neat

Summary

This PR adds the NEural Analysis Toolkit to EBRAINS.

Currently only the release candidate, therefor draft state.

Package	py-neat and ^py-dill (with patch)
Contact point	@willemw
KG entry

Checks

• Software Follows EBRAINS Software Quality Guidelines and reaches level:

  fill the SQ-Checklist.pdf and attach below

• Current maintainer is listed first in package.py
• No pinned dependency versions
• Post-installation tests are defined