update GEM steel and use GEM cement plant tracker

[fneum]

Closes #1774
Closes #1775

Changes proposed in this Pull Request

Update GEM steel plant tracker and use initial release of GEM cement plant tracker.

For use in build_industrial_distribution_key rule.

Distribution mostly by clinker capacity. Small values for griding.

Checklist

• I tested my contribution locally and it works as intended.
• Code and workflow changes are sufficiently documented.
• Changed dependencies are added to envs/environment.yaml.
• Changes in configuration options are added in config/config.default.yaml.
• Changes in configuration options are documented in doc/configtables/*.csv.
• Sources of newly added data are documented in doc/data_sources.rst.
• A release note doc/release_notes.rst is added.

[Copilot]

Pull Request Overview

This PR updates the industrial distribution key building process by replacing the GEM steel plant tracker with a newer version and introducing the new GEM cement plant tracker. The changes improve industrial site tracking by using the latest data sources.

• Updates GEM steel plant tracker from April 2024 to March 2025 version
• Replaces custom cement supplement data with new GEM cement plant tracker (July 2025)
• Modifies distribution logic to use cement capacity data from the new GEM tracker

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
scripts/build_industrial_distribution_key.py	Updates function signatures, replaces cement supplement logic with GEM cement tracker processing
rules/retrieve.smk	Updates steel tracker file path and adds new cement tracker retrieval rule
rules/build_sector.smk	Updates input file paths to use new tracker files
doc/release_notes.rst	Adds release note for the tracker updates
doc/data-retrieval.rst	Updates documentation for new tracker files and descriptions
doc/data-repos.rst	Removes old cement supplement data documentation
data/cement-plants-noneu.csv	Removes old cement supplement data file

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