refactor: move types folder to root level of input structure

- Move types folder from dictionary/types to types/ at same level as dictionary/
- Update SchemaManager._load_types() to look for types in INPUT_FOLDER/types instead of INPUT_FOLDER/dictionary/types
- Update all test cases to reflect new structure
- All unit tests pass (114/114) with 93% coverage
- Improves input structure organization and consistency

Author: Mike Storey

stage0_mongodb_api/managers/schema_manager.py

@@ -54,7 +54,7 @@ def _load_types(self) -> List[Dict]:
             List of load errors
         """
         errors = []
-        types_dir = os.path.join(self.config.INPUT_FOLDER, "dictionary", "types")
+        types_dir = os.path.join(self.config.INPUT_FOLDER, "types")
         if not os.path.exists(types_dir):
             errors.append({
                 "error": "directory_not_found",