Started implementing RouteArbiter
Example of a toplevel arbiter, input-directions and ready output still needs to be considered
Made a Packet bundle accordning to the one that exists on shmac
Made length a parameter to Fifo
Merge branch 'shmac-packet'

Conflicts:
	src/router/InputPort.scala
	src/router/OutputPort.scala
	src/utils/Fifo.scala