Refactor repository to match fz-Model template structure

[Copilot]

Aligns repository structure with the fz-Model template while preserving existing notebooks.

Changes

• Calculator config: Renamed localhost.json → localhost_Modelica.json (template convention)
• CI workflow: Replaced verify.yml with ci.yml following template structure (JSON validation, shell syntax checks, fzi/fzc integration tests)
• Test suite: Replaced verify_installation.py with test_plugin.py matching template test patterns
• Examples: Added examples/Modelica/ folder with .mo files (template pattern examples/{Model}/)
• README: Restructured to match template format with model/calculator configuration docs
• .gitignore: Added template patterns (*.out, *.msg, *.html, PID)

Preserved

All existing notebooks remain in root:

• 01_NewtonCooling_Parametric.ipynb
• 02_ProjectileMotion_Parametric.ipynb
• 03_ProjectileMotion_Advanced.ipynb

Original prompt

refactor repository to match template fz-Model. keep existing notebooks

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