feat: Create BigQuery Parameters for DatabaseModal (#14721)

superset/models/core.py

@@ -241,6 +241,7 @@ class Database(
     def parameters(self) -> Dict[str, Any]:
         # Build parameters if db_engine_spec is a subclass of BasicParametersMixin
         parameters = {"engine": self.backend}
+
         if hasattr(self.db_engine_spec, "parameters_schema") and hasattr(
             self.db_engine_spec, "get_parameters_from_uri"
         ):