add oekg specific annotation #1529

[stap-m]

Summary of the discussion

partly solves #1529 and https://github.com/OpenEnergyPlatform/oeplatform/issues/1718

Type of change (CHANGELOG.md)

Add

• oekg annotation

Update

• add annotation: climate neutrality criterion, negative emission, study report due to legislation, decarbonisation pathway, re-share, flexibility, energy conversion efficiency, resilience, life cycle assessment, co2 emissions, ghg emissions, acceptance, sufficiency, energy demand, electrical energy share, regionalsation, gross electricity generation, electricity/gas/heating grid, sector coupling, model coupling, scenario projection comparison, model intercomparison study, policies and measures

Workflow checklist

Automation

Closes #

PR-Assignee

• [ ] 🐙 Follow the Pull Request Workflow
• [ ] 📝 Update the CHANGELOG.md
• [ ] 📙 Add #'s to term tracker item

Reviewer

• [ ] 🐙 Follow the Reviewer Guide
• [ ] 🐙 Provided feedback and show sufficient appreciation for the work done