Add entity annotations display panel

[aadorian]

Description

Stanford Protégé has an 'Annotations' view showing all annotation assertions for the selected entity.

What to implement

Add a panel showing all annotations on selected entity:

• rdfs:label (all languages)
• rdfs:comment
• Custom annotation properties
• Allow adding/editing/removing annotations

Difficulty: Easy

Skills: React, OWL

Tasks

• Create AnnotationsPanel component
• Display all annotation assertions
• Support language tags
• Add/edit/remove annotation UI

Acceptance Criteria

• Shows all annotations on selected entity
• Displays language tags
• Can add new annotations
• Can edit existing annotations
• Can remove annotations