Create a performance benchmark for FSM

[alexvaluyskiy]

Akka.NET uses FSM actor in a many places, like remoting, persistence, cluster singleton. It is like one of the most important primitives. We should know how fast it is, and how many allocations it produces. The benchmark should test the actor throughput in a combination with different state changes

https://gist.github.com/alexvaluyskiy/6824137919369061fec5fe2882148fa7

[alexvaluyskiy]

Memory Footprint test

Throughput test