add new serialization and test

[jd-lara]

This is needed for the PR in PSY for monitored components Sienna-Platform/PowerSystems.jl#1672

[Copilot]

Pull request overview

This PR extends InfrastructureSystems’ JSON serialization/deserialization support to correctly handle Vector{Base.UUID} fields (needed for downstream PSY monitored components use cases), and adds a focused round-trip test to prevent regressions.

Changes:

• Add a deserialize(::Type{Vector{Base.UUID}}, ::AbstractVector) method to convert Vector{Dict} → Vector{Base.UUID} during struct deserialization.
• Add a new testset validating UUID vector serialization/deserialization, including a JSON round-trip to mimic on-disk format.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/serialization.jl	Adds a specialized deserializer for Vector{Base.UUID} so vector UUID fields don’t remain as Vector{Dict} after deserialization.
test/test_serialization.jl	Adds coverage for UUID vector round-tripping through IS.serialize/IS.deserialize and JSON3 encoding/decoding.

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.91%. Comparing base (4c9a97f) to head (9876c66).

Files with missing lines	Patch %	Lines
src/serialization.jl	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #580      +/-   ##
==========================================
+ Coverage   77.81%   78.91%   +1.09%     
==========================================
  Files          75       75              
  Lines        6734     6643      -91     
==========================================
+ Hits         5240     5242       +2     
+ Misses       1494     1401      -93     

Flag	Coverage Δ
unittests	78.91% <50.00%> (+1.09%)	⬆️

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Files with missing lines	Coverage Δ
src/serialization.jl	73.22% <50.00%> (+0.42%)	⬆️

... and 32 files with indirect coverage changes

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