A controversial billionaire tax measure in California — which has secured enough signatures to appear on the November ballot — would devastate the state’s economy, a new study published Monday shows. More than 108,000 jobs could be lost if the tax goes into effect, the analysis concluded, and $28 billion worth of wages would also be lost in California. “For everyday Californians, these are not abstract numbers. They represent fewer career opportunities in the state’s most dynamic industries and