Merge the Folly queue case study

_CoqProject

theories/examples/folly_queue/CG_queue.v

theories/examples/folly_queue/README.md

theories/examples/folly_queue/mpmcqueue.v

theories/examples/folly_queue/refinement.v

theories/examples/folly_queue/set.v

theories/examples/folly_queue/singleElementQueue.v

theories/examples/folly_queue/ticketLock.v

theories/examples/folly_queue/turnSequencer.v

theories/examples/red_blue_flag.v

theories/prelude/arith.v