chore: classify agent

[jimmywarting]

Checklist

• I have ensured my pull request is not behind the main or master branch of the original repository.
• I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
• I have written a commit message that passes commitlint linting.
• I have ensured that my code changes pass linting tests.
• I have ensured that my code changes pass unit tests.
• I have described my pull request and the reasons for code changes along with context if necessary.

hoping to have some more modernized codebase with classes and better IDE/autosuggestions.
some wishful thinking is also to be able to use private class method/fields later on.

[codecov-commenter]

Codecov Report

Patch coverage: 87.50% and project coverage change: -0.01% ⚠️

Comparison is base (cfb7b5e) 94.40% compared to head (fca95a3) 94.39%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1777      +/-   ##
==========================================
- Coverage   94.40%   94.39%   -0.01%     
==========================================
  Files          14       14              
  Lines        1143     1141       -2     
==========================================
- Hits         1079     1077       -2     
  Misses         64       64              

Files Changed	Coverage Δ
src/node/agent.js	88.88% <84.00%> (-0.70%)	⬇️
src/agent-base.js	100.00% <100.00%> (ø)

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[titanism]

awesome work - let us know when ready for review. happy to have you as a collab/maintainer too on all of this

[jimmywarting]

Thanks. I'm ready for a review.
I just did a simple PR to see if this is active/maintained and what kind of things you are acceptable of.
you can maybe expect more PR to come later on.