refactor: address TODOs PE-7339

[fedellen]

this PR addresses some of the TODOs. We still have 23 in the codebase, quite a few around improved testing coverage

• removes timestamp conversion (looks good so far, test this devnet) <-- did not blend, we need this converison
• gives types for ARIOEvent
• Adds Buy-Name handler in addition to Buy-Record in preparation for standardizing on Name
• excises TODOs that are already done or seemed unnecessary

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.42%. Comparing base (7edaece) to head (1d9fd82).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #296      +/-   ##
===========================================
- Coverage    94.44%   94.42%   -0.03%     
===========================================
  Files           10       10              
  Lines         2990     2993       +3     
===========================================
+ Hits          2824     2826       +2     
- Misses         166      167       +1     

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