feat: add GenericCombinationStrategy enum and update GenericMapper to support multiple sources and combinations

Author: Knerio

proto/shared/shared.data_type.proto

@@ -107,10 +107,17 @@ message GenericType {
 }
 
 // target get mapped to source
+enum GenericCombinationStrategy {
+    AND = 0;
+    OR = 1;
+}
+
 message GenericMapper {
   // can point to another generic or to a resolved data type
   // Assigns source to this source
-  DataTypeIdentifier source = 1;
+  repeated DataTypeIdentifier source = 1;
   // can only be a generic key for example: 'T', 'V'
   string target = 2;
+
+  repeated GenericCombinationStrategy generic_combinations = 3;
 }