Simpler state change conditions in the state machine viewer

[arthurdblrd]

When a condition to change state in a state machine is complex, it can make the state machine viewer hard to read and not very explanatory.

It would be great if the user could set the changing condition with a more explanatory text which will appear in the state machine viewer.

Maybe by adding a comment on the line where the new state is set, maybe with a new keyword like @fsmcondition.

[qarlosalberto]

It's a good idea