/claim #9844

• add an E type parameter to Queue

• add a shutdownCause method that takes a type parameter of type Cause[E]

• shutdownCause would also return the items currently buffered in the queue in order to dispose of them

• after shutdownCause has been called, any attempt to interact with the queue will fail with the cause

• methods like take, offer etc. should indicate errors of type E

• streams created with ZStream.fromQueue would also fail with this cause

• shutdownCause should be atomic: when multiple fibers call it at the same time, one of them wins and the others fail with the cause supplied by the winner.