Add support for DeviceModel neurodata type

[rly]

Motivation

Fix #2043

How to test the behavior?

Show how to reproduce the new behavior (can be a bug fix or a new feature)

Checklist

• Did you update CHANGELOG.md with your changes?
• Have you checked our Contributing document?
• Have you ensured the PR clearly describes the problem and the solution?
• Is your contribution compliant with our coding style? This can be checked running ruff check . && codespell from the source directory.
• Have you checked to ensure that there aren't other open Pull Requests for the same change?
• Have you included the relevant issue number using "Fix #XXX" notation where XXX is the issue number? By including "Fix #XXX" you allow GitHub to close issue #XXX when the PR is merged.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.94%. Comparing base (efbc778) to head (670aa90).

Additional details and impacted files

@@                 Coverage Diff                  @@
##           nwb-schema-2.9.0    #2088      +/-   ##
====================================================
+ Coverage             94.90%   94.94%   +0.03%     
====================================================
  Files                    28       28              
  Lines                  2809     2830      +21     
  Branches                719      724       +5     
====================================================
+ Hits                   2666     2687      +21     
  Misses                   87       87              
  Partials                 56       56              

Flag	Coverage Δ
integration	74.59% <75.00%> (-0.03%)	⬇️
unit	84.77% <100.00%> (+0.11%)	⬆️

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[stephprince]

Looks good to me! A couple minor questions about documentation