feat(toolkit-lib): structured messages for hotswap

[mrgrain]

Adds structured data to hotswap messages. Includes a new trace method that contains information about the hotswap after details have been computed, but before execution.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.05%. Comparing base (a3b405a) to head (864bf04).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #260      +/-   ##
==========================================
+ Coverage   85.00%   85.05%   +0.04%     
==========================================
  Files         218      218              
  Lines       36560    36585      +25     
  Branches     4569     4580      +11     
==========================================
+ Hits        31079    31116      +37     
+ Misses       5337     5320      -17     
- Partials      144      149       +5     

Flag	Coverage Δ
suite.unit	85.05% <100.00%> (+0.04%)	⬆️

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