Makes CMA definitions more specific and documents what a template ras…

…ter is

cdr_schemas/prospectivity_input.py

@@ -1,7 +1,7 @@
 from enum import Enum
-from typing import List, Optional, Union
+from typing import List, Optional, Tuple, Union
 
-from geojson_pydantic import Polygon
+from geojson_pydantic import MultiPolygon
 from pydantic import BaseModel, Field
 
 
@@ -61,15 +61,15 @@ class ProcessedDataLayer(BaseModel):
 
 class CriticalMineralAssessment(BaseModel):
  crs: str
- extent: Polygon
- resolution: tuple
+ extent: MultiPolygon
+ resolution: Tuple[int, int]
  mineral: str
  description: str
 
 
 class CMATemplate(BaseModel):
  cma: CriticalMineralAssessment
- file: str
+ file: str # path to template raster defining extent,crs for resampling
 
 
 class StackMetaData(BaseModel):