Adding TPS parameter to config-schema

preprocessor/preprocessor/config-schema.yaml

@@ -139,6 +139,10 @@ definitions:
             force_north_up:
               description:
               type: boolean
+            tps:
+              description: Whether to use TPS transformation instead of GCP polynomials.
+              type: boolean
+
       required: [type]
     calc:
       description: Definition of a calculation step.