feat: enhance Kotlin DSL

[nickmcdowall]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.80%. Comparing base (8868f6d) to head (73e2835).

Files with missing lines	Patch %	Lines
...ain/kotlin/com/lsd/core/builders/MessageBuilder.kt	83.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #283      +/-   ##
============================================
- Coverage     92.09%   91.80%   -0.30%     
  Complexity      149      149              
============================================
  Files            37       37              
  Lines           683      683              
  Branches         67       68       +1     
============================================
- Hits            629      627       -2     
- Misses           28       29       +1     
- Partials         26       27       +1     

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