aw3567: added 10cm depth measurement

Models/CarbonRequest.cs

@@ -38,6 +38,7 @@ namespace CarbonService.Models
     {
         public double? OM_Const { get; set; }
         public double? Clay_Content { get; set; }
+        public bool? Depth10 { get; set; }
     }
 
     public class OrgManureApplied

Models/CropSets.cs

@@ -15,5 +15,6 @@ namespace FarmMapsAPI.Carbon.Models
         public List<StrawCrp> StrawCrops { get; set; }
         public List<string> GreenManureType { get; set; }
         public List<string> Perennial { get; set; }
+        public List<string> Grass_nat { get; set; }
     }
 }

Models/FarmMapsCarbonRequest.cs

@@ -74,6 +74,7 @@ namespace FarmMapsAPI.Carbon.Models
     {
         public double? OM_Const { get; set; }
         public double? Clay_Content { get; set; }
+        public bool Depth10 { get; set; }
     }
 
     public class GreenManureTypeFarmMaps

Models/SoilPropertyType.cs

@@ -11,6 +11,7 @@ namespace FarmMapsAPI.Carbon.Models
         public double Bulk_Density { get; set; }
         public double Clay_Content { get; set; }
         public double Depth { get; set; }
+        public bool Depth10 { get; set; }
     }
 
     struct SoilTypePropertyKey