[DNM] Fix codegen templates and generate additional upstream events

[bidetofevil]

Generate classes for upstream events so they we can use the Java Logger interface instead. As well, there was an issue processing attributes upstream that should be enum and arrays.

These are put on two separate commits so they can be diff'd separately.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.84%. Comparing base (6853aa3) to head (eb9cbb7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1895      +/-   ##
==========================================
- Coverage   64.89%   64.84%   -0.05%     
==========================================
  Files         168      168              
  Lines        3723     3718       -5     
  Branches      390      390              
==========================================
- Hits         2416     2411       -5     
  Misses       1194     1194              
  Partials      113      113              

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