add stmt to fully format create function statements

Author: PhilippSalvisberg

settings/sql_developer/trivadis_custom_format.arbori

@@ -550,7 +550,8 @@ i5_define_global_functions:
            "merge",
            "block_stmt",
            "pkg_body",
-           "create_plsql"
+           "create_plsql",
+           "stmt"
         ]);
     }