FSM Update

[PetrosPapapa]

This is a chunky PR with a number of updates, especially on the FSM. It includes these: #15 #18 #19 #20 #21 resolves #13

Changelog

General

• Bumped Scala to 3.3.4, sbt to 1.9.9
• The ask ? pattern(s) now populates the sender. Use at your own risk.
• The Scheduler can now schedule fixed rate repeated tasks.
• Added TestKit with a few handful testing methods with timings.
• Ported unit tests for the Scheduler, FSM responses, and FSM timers from Akka (with some overlap with TimeoutFSMSuite).

FSM

• Added timers.
• Added contexts in various methods (preStart, onTransition etc).
• The FSM now replies to asks by return value or by sending messages correctly (see #15 for more details).

Minor changes and bug fixes

• ActorLogging can now be used for any ReplyingActor, not just Actor.
• Fixed bug with Scheduler showing up as idle when a fiber is still running or had thrown an exception.
• Minor improvement of TrackingActor to use queues instead of lists.
• Renamed StateManager$.minimalContext to actorContext to differentiate better from the new StateContext and TransitionContext.
• Added State$.forMax(FiniteDuration, Request) for easier use.
• Cleaned up some overlapping type class parameters.
• Fixed memory leaks in FSM tests.
• Fixed VendingMachine incorrectly expecting a StateTimeout instead of a AwaitingUserTimeout.
• Moved FSM tests to com.suprnation.actor.fsm to match the main package.