feat: Add "is_select_query" method to base engine spec to make it possible to override it (#15013)

superset/db_engine_specs/base.py

@@ -1254,6 +1254,14 @@ class BaseEngineSpec:  # pylint: disable=too-many-public-methods
             or parsed_query.is_show()
         )
 
+    @classmethod
+    def is_select_query(cls, parsed_query: ParsedQuery) -> bool:
+        """
+        Determine if the statement should be considered as SELECT statement.
+        Some query dialects do not contain "SELECT" word in queries (eg. Kusto)
+        """
+        return parsed_query.is_select()
+
     @classmethod
     @utils.memoized
     def get_column_spec(