Restructure repository to support multiple ontology modules

[aigora-de]

This pull request is "suspended" until a plan for addressing the issues raised is made and resources assigned. It is also dependent on PR #17 being completed first

Restructure Repository for Multi-Module Support

Closes #1

Summary

This PR restructures the ont-ies repository to support publishing multiple IES ontology modules across different domains. The current flat structure under docs/ only supports IES Common; this change introduces a modular architecture that can accommodate additional domain modules (e.g., IES Building, SDNP modules) as they are developed.

Changes Made

New Files Created

• registry.yml — Machine-readable index of all published modules
• RELEASES.md — Documentation for composite releases (tested module combinations)
• docs/common/module.yml — Module metadata for IES Common
• docs/common/CHANGELOG.md — Module-specific changelog (content from root CHANGELOG.md)
• docs/common/specification/index.md — Updated specification landing page
• docs/common/examples/index.md — Updated examples landing page
• docs/common/user-guides/index.md — Updated user guides landing page

Files Updated

• README.md — Updated with new repository structure documentation
• docs/index.md — Updated to serve as landing page for all modules

Files Removed

• VERSION — Version info now in docs/common/module.yml
• CHANGELOG.md — Content moved to docs/common/CHANGELOG.md

Target Structure

After migration is complete:

docs/
├── index.md                    # Documentation landing page
├── glossary.md                 # Shared glossary
├── assets/                     # Shared assets
└── common/                     # IES Common module
    ├── specification/
    │   ├── ies-common.ttl
    │   ├── ies-common.rdf
    │   ├── ies-common.json
    │   ├── ies-common.n3
    │   ├── ies-common.shacl
    │   ├── ies.md
    │   └── index.md
    ├── examples/
    │   ├── ies-examples.md
    │   ├── sample-data/
    │   └── index.md
    ├── user-guides/
    │   └── [user guide files]
    ├── module.yml
    └── CHANGELOG.md

Versioning Strategy

This PR implements the agreed versioning approach:

• Module tags: {module-id}/v{version} (e.g., common/v5.0.0)
• Release candidates: {module-id}/v{version}-rcN
• Composite releases: ies-release-{yyyy.mm}
• Maintenance branches: {module-id}/v{major}.x (created when needed)

[aigora-de]

This pull request is "suspended" until a plan for addressing the issues raised is made and resources assigned. It is also dependent on PR #17 being completed first