refactor(cli): non hotswappable changes with structured data

[mrgrain]

Refactor NonHotswappableChange to contain consistent, well-structured data.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 78.46154% with 28 lines in your changes missing coverage. Please review.

Project coverage is 84.86%. Comparing base (814c45d) to head (896a9c6).

Files with missing lines	Patch %	Lines
...aws-cdk/lib/api/deployments/hotswap-deployments.ts	74.28%	27 Missing ⚠️
packages/aws-cdk/lib/api/hotswap/common.ts	96.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #255      +/-   ##
==========================================
+ Coverage   84.85%   84.86%   +0.01%     
==========================================
  Files         218      218              
  Lines       36530    36560      +30     
  Branches     4544     4554      +10     
==========================================
+ Hits        30998    31028      +30     
  Misses       5388     5388              
  Partials      144      144              

Flag	Coverage Δ
suite.unit	84.86% <78.46%> (+0.01%)	⬆️

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