add multiple SystemItem in resolution#13

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LucasLessa1 wants to merge 2 commits intoElecta-Git:mainfrom

LucasLessa1:main

Commits on Nov 18, 2025

Rename make_file! to make_problem! in multiple examples and tests for consistency
LucasLessa1
committed
Refactor SystemItem structure and add support for multiple SystemItem in resolution
LucasLessa1
committed