Integrate kpi-calculator from PyPI

[jarsarasty]

• Adds kpi-calculator>=0.4.0a2 as a dependency and calls it after each simulation run to calculate and embed KPIs into the output ESDL
• Uses KpiManager.load_from_simulator to resolve simulator port-indexed results against the input ESDL, and
  build_esdl_string_with_kpis to embed the results into the output ESDL string
• KPI failure is non-fatal: any exception is logged and the simulation result is returned without KPIs
• Adds an integration test that runs a 2-hour ATES simulation end-to-end and verifies CAPEX and OPEX values match the cost data in test_ates.esdl

[Copilot]

Pull request overview

This PR integrates KPI calculation functionality into the simulator-worker by adding the kpi-calculator package from PyPI. The integration adds KPI computation to the simulation workflow while maintaining graceful error handling to ensure simulations can complete even if KPI calculation fails.

Changes:

• Added kpi-calculator>=0.1.1 dependency and updated urllib3 to 2.6.3
• Integrated KPI calculation into simulator_worker.py after simulation completion
• Added convert_simulator_to_kpi_format utility function to transform simulator output format to KPI calculator format
• Added comprehensive integration tests for KPI functionality

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pyproject.toml	Added kpi-calculator dependency and updated pytest configuration to include new test file
dev-requirements.txt	Updated urllib3 dependency version
src/simulator_worker/simulator_worker.py	Integrated KPI calculation workflow with error handling
src/simulator_worker/utils.py	Added utility function to convert simulator DataFrame format to KPI calculator format
unit_test/test_kpi_integration.py	Added comprehensive integration tests for KPI functionality

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[jarsarasty]

This PR is now updated with the new pre-release of the KPI calculator.