added cabal file
added cabal file

haskell-distributed/distributed-process-extras,haskell-distributed/distributed-process-platform,haskell-distributed/distributed-process-supervisor,haskell-distributed/distributed-process-execution,qnikst/distributed-process-extras,haskell-distributed/distributed-process-async,qnikst/distributed-process-task,qnikst/distributed-process-async