With its towering pine trees and par-71 golf course, Woodcrest Country Club in Cherry Hill has served as an enclave for South Jersey’s elite going back almost a century. But the club’s future is now in doubt as a long-running dispute involving former members, a local bank, and millions in outstanding debt heads to bankruptcy court. The club filed for bankruptcy protection in U.S. District Court in Camden this week against debts owed to more than 100 creditors, including $10.7 million claimed by Sun National Bank in Vineland, N.J., according to court filings.