Closes #796 - Add Ontology item type support

[Copilot]

• Analyze how Ontology data binding files reference other items (logical ID + default workspace ID)
• Compare with Data Pipeline documentation pattern for automatic same-workspace resolution
• Update Ontology documentation in docs/how_to/item_types.md to accurately describe automatic resolution for same-workspace items and parameterization only for cross-workspace items
• Validate: docs build, ruff format, ruff check, pytest (837 passed)

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[Copilot]

Pull request overview

Adds Microsoft Fabric Ontology as a first-class item type in fabric-cicd, wiring it into the item-type enum + publisher factory so publish_all_items() can deploy Ontology items like other supported types.

Changes:

• Add ItemType.ONTOLOGY and include it in the serial publish/unpublish order.
• Introduce OntologyPublisher and register it in the publisher factory.
• Update docs/tests/devtools and add sample workspace artifacts that include an Ontology item.

Reviewed changes

Copilot reviewed 33 out of 36 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/fabric_cicd/constants.py	Adds ONTOLOGY to ItemType and SERIAL_ITEM_PUBLISH_ORDER so it’s in scope for publish/unpublish workflows.
src/fabric_cicd/_items/_ontology.py	New OntologyPublisher using the default ItemPublisher behavior.
src/fabric_cicd/_items/_base_publisher.py	Registers OntologyPublisher in ItemPublisher.create() mapping.
tests/test_publish.py	Adds a unit test asserting Ontology items trigger the Ontology publisher during publish_all_items().
tests/test_integration_publish.py	Extends integration deployment scope list to include Ontology.
docs/how_to/item_types.md	Documents Ontology parameterization/rebinding behavior expectations.
devtools/debug_trace_deployment.py	Adds Ontology to the debug trace deployment item list.
devtools/debug_local.py	Adds Ontology to local debug item list.
sample/workspace/**	Adds sample Ontology + supporting artifacts (Lakehouse/Eventhouse/KQL DB) for realistic repository structure coverage.
.changes/unreleased/new-items-20260326-132648.yaml	Adds changelog entry for Ontology support.