feat: complete Wallonia land cover and terrain sources

backend/app/schemas/detection.py

@@ -18,6 +18,11 @@ class DetectionModelCapability(BaseModel):
     status: str
     limitation_message: str
     version: str | None = None
+    training_scope: str | None = None
+    validation_scope: str | None = None
+    validated_regions: list[str] = Field(default_factory=list)
+    nationally_validated: bool = False
+    operator_review_required: bool = True
 
 
 class DetectionModelsResponse(BaseModel):