Removed is_electricity_producer

[johnjasa]

Remove is_electricity_producer and make finance components commodity-agnostic

Previously, the finance components (ProFastBase / ProFastLCO / ProFastNPV and NumpyFinancialNPV) inspected commodity_type to decide whether to use electricity units (kW, kWh, USD/(kW*h)) or mass units (kg/h, kg, USD/kg). A helper named is_electricity_producer was also used in H2IntegrateModel.create_finance_model to special-case detection of the commodity-stream technology when the user did not specify one for an electricity finance subgroup.

This PR removes that electricity-specific logic from the finance layer so the finance components only know about units, not commodities, and the model-build layer is responsible for selecting the correct units when constructing finance components.

Finance components

ProFastBase and NumpyFinancialNPV now expose three explicit unit options:

self.options.declare("commodity_rate_units", default="kg/h", ...)
self.options.declare("commodity_amount_units", default="kg", ...)
self.options.declare("price_units", default="USD/kg", ...)

H2IntegrateModel.create_finance_model

• Removed the import of is_electricity_producer
• The previous if commodity == "electricity" branch is gone
• A new default_commodity_units mapping near fin_comp creation supplies electricity-specific defaults (kW / kWh / USD/(kW*h)) and falls back to mass defaults for any other commodity

H2IntegrateModel.create_technology_models

• Added self.tech_perf_models: dict[str, om.System], populated as each tech group is built, so other model-build steps can look up a tech's performance-model component directly by tech_name rather than having to walk the OpenMDAO subsystem tree.

commodity_stream_definitions.py

• Removed the is_electricity_producer function and its module-docstring item.
• Removed test_is_electricity_producer.

Section 1: Type of Contribution

• Feature Enhancement
  • Framework
  • New Model
  • Updated Model
  • Tools/Utilities
  • Other (please describe):
• Bug Fix
• Documentation Update
• CI Changes
• Other (please describe):

Section 2: Draft PR Checklist

• Open draft PR
• Describe the feature that will be added
• Fill out TODO list steps
• Describe requested feedback from reviewers on draft PR
• Complete Section 8: New Model Checklist (if applicable)

Section 3: General PR Checklist

• PR description thoroughly describes the new feature, bug fix, etc.
• Added tests for new functionality or bug fixes
• Tests pass (If not, and this is expected, please elaborate in the Section 6: Test Results)
• Documentation
  • Docstrings are up-to-date
  • Related docs/ files are up-to-date, or added when necessary
  • Documentation has been rebuilt successfully
  • Examples have been updated (if applicable)
• CHANGELOG.md
  • At least one complete sentence has been provided to describe the changes made in this PR
  • After the above, a hyperlink has been provided to the PR using the following format:
    "A complete thought. [PR XYZ]((https://github.com/NatLabRockies/H2Integrate/pull/XYZ)", where
    XYZ should be replaced with the actual number.

Section 4: Related Issues

Resolves #604

Section 5: Impacted Areas of the Software

Section 5.1: New Files

• N/A

Section 5.2: Modified Files

A lot!

Section 6: Additional Supporting Information

This change is behavior-preserving for users who build models through H2IntegrateModel with the standard YAML configuration: electricity finance subgroups still default to kW / kWh / USD/(kW*h), mass-commodity subgroups still default to kg/h / kg / USD/kg, and default commodity-stream detection still finds the same producer technologies (now identified by the model's own commodity attribute rather than a hard-coded prefix table).

Section 7: Test Results, if applicable

• h2integrate/core/test/ and h2integrate/finances/test/: 67 passed locally.
• Full unit and regression suites still to be run in CI.

[johnjasa]

Waiting on #786 to pass and come in, then I'll revamp this

[johnjasa]

Closing in favor of #786 once I update it a bit