[EMS] Add Morocco prefectures & provinces layer

[jsanz]

Adds a GeoJSON layer for Morocco's 75 prefectures and provinces:

• Cleaned OSM boundaries (removed non-admin features, deduplicated)
• Validated against ISO3166-2 / Wikidata
• Standardized fields: id, label_fr, label_ar, label_en, iso_3166_2
• Also updates sources/ma/morocco-regions-v1.hjson with consistent naming conventions

Co-authored-by: Nor EL MALKI nor.elmalki@gmail.com

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[github-actions]

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Status	Branch	Result
✅	feature-layers

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