It won’t be until 2009 when developer Bruce Ratner will be ready to pop the bubbly for the opening of his Beekman St. project, but a passerby apparently couldn’t wait until then, leaving an empty bottle at the site. Construction crews have begun building the foundation for the residential tower and K-8 school that is being designed by renowned architect Frank Gehry — who is still fine tuning the plan. A Ratner spokesperson said there are still no final renderings to release.