CS 1.0: SD-2982: Add cargoType filter (#620)

Author: HenrikHL

.stoplight/styleguide.json

@@ -233,6 +233,23 @@ paths:
               - `CY` (Container yard (incl. rail ramp))  
               - `SD` (Store Door)  
               - `CFS` (Container Freight Station)
+        - schema:
+            type: string
+            default: DRY
+            example: REEFER
+          in: query
+          name: cargoType
+          description: |
+            This parameter can influence:
+            * the routing solutions returned
+            * the feasibility of individual transport legs
+            * the reported footprint values, when provided
+
+            Possible values:
+            - `DRY` (For DRY cargo)
+            - `REEFER` (Reefer cargo)
+
+            The default value is `DRY` in case this filter parameter is not used.
         - schema:
             type: integer
             format: int32