message: Removing forward-declaration made redundant by refactoring
diff: namespace duckdb {
  -// forward declaration to break circular inclusion
  -class LogicalExtensionOperator;
  -
  //! The OperatorExtensionInfo holds static information relevant to the operator extension
  struct OperatorExtensionInfo {
  DUCKDB_API virtual ~OperatorExtensionInfo() {
  