stbx-core: Add tests for wirings and firings

[marcosh]

check that:

• given a marking and a sequence of firings, check that the resulting marking is as expected (

  purescript-studio/stbx-protocol/src/Statebox/Protocol/Fire.purs

  Line 30 in 7e2236b

  fire :: Wiring -> Firing -> Marking -> FiringError \/ Marking

  )
• given a wiring tree, check that the linearization into glued transitions is correct (

  purescript-studio/stbx-core/src/Statebox/Core/WiringTree.purs

  Line 29 in 7e2236b

  linearize :: WiringTree -> LinearizationError \/ Array (Glued Transition)

  )
• given an ArrayMultiset a we convert it correctly to an Array (PlaceMarking a Int) (

  purescript-studio/stbx-core/src/Statebox/Core/Transition.purs

  Line 31 in 7e2236b

  buildPlaceMarkings :: ∀ a. Ord a => ArrayMultiset a -> Array (PlaceMarkingF a Int)

  )