[NFC] Update Event folder structure

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (main@472064f). Learn more about missing BASE report.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #395   +/-   ##
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  Coverage        ?   16.86%           
=======================================
  Files           ?      412           
  Lines           ?    22201           
  Branches        ?        0           
=======================================
  Hits            ?     3745           
  Misses          ?    18456           
  Partials        ?        0           

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