[java-sdk] Create ActorProxy

[artursouza]

1. Create the ActorProxy methods on the Java SDK, modeling it after the Dotnet proxy. It should only implement non remoting invocation methods, basically all InvokeAsync. Non remoting invocation is explained here

[ji11er]

can you assign it to me?

[JuanJose-Herrera]

Hi All, I will start to work in the ActorProxy methdos